80th United States Congress

The 80th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from January 3, 1947, to January 3, 1949, during the third and fourth years of Harry S. Truman's presidency. The apportionment of seats in this House of Representatives was based on the 1940 United States census.

The Republicans won the majority in both chambers, marking the first time since the 71st Congress they held full control of Congress, and the first time since the 72nd Congress they held either of the two chambers. This also ended a 14-year Democratic overall federal government trifecta, dating back to the 73rd Congress. This ties with the 14-year Republican trifecta from 1897 to 1911 as the longest trifectas of Congress and is the last time, as of 2024, a trifecta was achieved that lasted longer a decade.

Although the 80th Congress passed a total of 906 public bills, President Truman nicknamed it the "Do Nothing Congress" and, during the 1948 election, campaigned as much against it as against his formal opponent, Thomas E. Dewey. The 80th Congress passed several significant bills with bipartisan support, most famously the Truman Doctrine, the Marshall Plan, and the Taft–Hartley Act, but it opposed most of Truman's Fair Deal bills.

Major events

 * January 3, 1947: Proceedings of the United States Congress were televised for the first time.
 * March 12, 1947: In a Joint Session of Congress, President Truman proclaimed the Truman Doctrine.
 * July 18, 1947: The Trust Territory of the Pacific Islands entered into a trusteeship with the United Nations and administered by the United States.
 * November 24, 1947: The House of Representatives approved citations of contempt of Congress against the so-called Hollywood 10.
 * July 20, 1948: President Truman issued the second peacetime military draft in the United States amid increasing tensions with the Soviet Union.
 * July 26, 1948:
 * Turnip Day Session begins, mandated by Truman on July 15, 1948
 * President Truman signed Executive Order 9981, ending racial segregation in the United States Armed Forces.
 * August 25, 1948: House Un-American Activities Committee held the first-ever televised congressional hearing: "Confrontation Day" between Whittaker Chambers and Alger Hiss.
 * November 2, 1948: United States general elections, 1948:
 * Presidential election: Harry Truman defeated Thomas E. Dewey, Strom Thurmond, and Henry A. Wallace;
 * Democrats regained control of the Senate and the House of Representatives

Major legislation

 * May 22, 1947: Assistance to Greece and Turkey Act (Truman Doctrine), Sess. 1, ch. 81, ,
 * June 23, 1947: Taft–Hartley Act, Sess. 1, ch. 120, ,
 * July 18, 1947: Presidential Succession Act of 1947, Sess. 1, ch. 264, ,
 * July 26, 1947: National Security Act of 1947, Sess. 1, ch. 343, ,
 * August 7, 1947: Mineral Leasing Act for Acquired Lands, Sess. 1, ch. 513, ,
 * January 27, 1948: United States Information and Educational Exchange Act, Sess. 2, ch. 36, ,
 * April 3, 1948: Foreign Assistance Act (Marshall Plan),, Sess. 2, ch. 169,
 * April 3, 1948: Greek-Turkish Assistance Act of 1948 (Marshall Plan), Sess. 2, ch. 169,, Title III,
 * May 26, 1948: Civil Air Patrol Act, Sess. 2, ch. 349, ,
 * June 12, 1948: Women's Armed Services Integration Act, Sess. 2, ch. 449, ,
 * June 17, 1948: Reed-Bulwinkle Act, Sess. 2, ch. 491, ,
 * June 25, 1948: Codify and enact into law Title 3 of the United States Code – The President, Sess. 2, ch. 644, ,
 * June 28, 1948: Commodity Credit Corporation Charter Act of 1948, ,
 * June 30, 1948: Federal Water Pollution Control Act, Sess. 2, ch. 758, ,
 * July 3, 1948: War Claims Act of 1948, Sess. 2, ch. 826, ,
 * July 3, 1948: Agricultural Act of 1948, Sess. 2, ch. 827, ,

Constitutional amendments

 * March 21, 1947: Approved an amendment to the United States Constitution setting a term limit for election and overall time of service to the office of President of the United States, and submitted it to the state legislatures for ratification
 * Amendment was later ratified on February 27, 1951, becoming the Twenty-second Amendment to the United States Constitution

House of Representatives
From the beginning to the end of this Congress, there was no net change in party power. The Democrats lost one seat, which remained vacant until the next Congress.

Senate

 * President: Vacant
 * President pro tempore: Arthur Vandenberg (R)

Majority (Republican) leadership

 * Majority leader: Wallace H. White Jr.
 * Majority whip: Kenneth S. Wherry
 * Republican Conference Chairman: Eugene Millikin
 * Republican Conference Secretary: Milton Young
 * National Senatorial Committee Chair: Owen Brewster
 * Policy Committee Chairman: Robert A. Taft

Minority (Democratic) leadership

 * Minority leader: Alben W. Barkley
 * Minority whip: Scott W. Lucas
 * Democratic Caucus Secretary: Brien McMahon
 * Policy Committee Chairman: Alben W. Barkley

House of Representatives

 * Speaker: Joseph W. Martin Jr. (R)

Majority (Republican) leadership

 * Majority Leader: Charles A. Halleck
 * Republican Whip: Leslie C. Arends
 * Republican Conference Chairman: Roy O. Woodruff
 * Republican Campaign Committee Chairman: Leonard W. Hall

Minority (Democratic) leadership

 * Minority Leader: Sam Rayburn
 * Democratic Whip: John W. McCormack
 * Democratic Caucus Chairman: Aime Forand
 * Democratic Campaign Committee Chairman: Michael J. Kirwan

Caucuses

 * House Democratic Caucus
 * Senate Democratic Caucus

Senate
Senators are popularly elected statewide every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election, In this Congress, Class 2 meant their term ended with this Congress, requiring reelection in 1948; Class 3 meant their term began in the last Congress, requiring reelection in 1950; and Class 1 meant their term began in this Congress, requiring reelection in 1952.

Alabama

 * 2. John J. Sparkman (D)
 * 3. J. Lister Hill (D)

Arizona

 * 1. Ernest McFarland (D)
 * 3. Carl Hayden (D)

Arkansas

 * 2. John L. McClellan (D)
 * 3. J. William Fulbright (D)

California

 * 1. William Knowland (R)
 * 3. Sheridan Downey (D)

Colorado

 * 2. Edwin C. Johnson (D)
 * 3. Eugene Millikin (R)

Connecticut

 * 1. Raymond E. Baldwin (R)
 * 3. Brien McMahon (D)

Delaware

 * 1. John J. Williams (R)
 * 2. C. Douglass Buck (R)

Florida

 * 1. Spessard Holland (D)
 * 3. Claude Pepper (D)

Georgia

 * 2. Walter F. George (D)
 * 3. Richard Russell Jr. (D)

Idaho

 * 2. Henry Dworshak (R)
 * 3. Glen H. Taylor (D)

Illinois

 * 2. Charles W. Brooks (R)
 * 3. Scott W. Lucas (D)

Indiana

 * 1. William E. Jenner (R)
 * 3. Homer E. Capehart (R)

Iowa

 * 2. George A. Wilson (R)
 * 3. Bourke B. Hickenlooper (R)

Kansas

 * 2. Arthur Capper (R)
 * 3. Clyde M. Reed (R)

Kentucky

 * 2. John Sherman Cooper (R)
 * 3. Alben Barkley (D)

Louisiana

 * 2. Allen J. Ellender (D)
 * 3. John H. Overton (D), until May 14, 1948
 * William C. Feazel (D), May 18, 1948 – December 30, 1948
 * Russell B. Long (D), from December 31, 1948

Maine

 * 1. Ralph Owen Brewster (R)
 * 2. Wallace H. White Jr. (R)

Maryland

 * 1. Herbert O'Conor (D)
 * 3. Millard Tydings (D)

Massachusetts

 * 1. Henry Cabot Lodge Jr. (R)
 * 2. Leverett Saltonstall (R)

Michigan

 * 1. Arthur H. Vandenberg (R)
 * 2. Homer S. Ferguson (R)

Minnesota

 * 1. Edward John Thye (R)
 * 2. Joseph H. Ball (R)

Mississippi

 * 1. Theodore G. Bilbo (D), until August 21, 1947
 * John C. Stennis (D), from November 17, 1947
 * 2. James Eastland (D)

Missouri

 * 1. James P. Kem (R)
 * 3. Forrest C. Donnell (R)

Montana

 * 1. Zales Ecton (R)
 * 2. James E. Murray (D)

Nebraska

 * 1. Hugh A. Butler (R)
 * 2. Kenneth S. Wherry (R)

Nevada

 * 1. George W. Malone (R)
 * 3. Patrick A. McCarran (D)

New Hampshire

 * 2. Styles Bridges (R)
 * 3. Charles W. Tobey (R)

New Jersey

 * 1. Howard Alexander Smith (R)
 * 2. Albert W. Hawkes (R)

New Mexico

 * 1. Dennis Chávez (D)
 * 2. Carl Hatch (D)

New York

 * 1. Irving Ives (R)
 * 3. Robert F. Wagner (D)

North Carolina

 * 2. William B. Umstead (D), until December 30, 1948
 * J. Melville Broughton (D), from December 31, 1948
 * 3. Clyde R. Hoey (D)

North Dakota

 * 1. William Langer (R-NPL)
 * 3. Milton Young (R)

Ohio

 * 1. John W. Bricker (R)
 * 3. Robert A. Taft (R)

Oklahoma

 * 2. Edward H. Moore (R)
 * 3. Elmer Thomas (D)

Oregon

 * 2. Guy Cordon (R)
 * 3. Wayne Morse (R)

Pennsylvania

 * 1. Edward Martin (R)
 * 3. Francis J. Myers (D)

Rhode Island

 * 1. J. Howard McGrath (D)
 * 2. Theodore F. Green (D)

South Carolina

 * 2. Burnet R. Maybank (D)
 * 3. Olin D. Johnston (D)

South Dakota

 * 2. Harlan J. Bushfield (R), until September 27, 1948
 * Vera C. Bushfield (R), October 6, 1948 – December 26, 1948
 * Karl E. Mundt (R), from December 31, 1948
 * 3. John Chandler Gurney (R)

Tennessee

 * 1. Kenneth McKellar (D)
 * 2. Tom Stewart (D)

Texas

 * 1. Tom T. Connally (D)
 * 2. W. Lee O'Daniel (D)

Utah

 * 1. Arthur Vivian Watkins (R)
 * 3. Elbert D. Thomas (D)

Vermont

 * 1. Ralph Flanders (R)
 * 3. George Aiken (R)

Virginia

 * 1. Harry F. Byrd (D)
 * 2. A. Willis Robertson (D)

Washington

 * 1. Harry P. Cain (R)
 * 3. Warren G. Magnuson (D)

West Virginia

 * 1. Harley M. Kilgore (D)
 * 2. Chapman Revercomb (R)

Wisconsin

 * 1. Joseph McCarthy (R)
 * 3. Alexander Wiley (R)

Wyoming

 * 1. Joseph C. O'Mahoney (D)
 * 2. Edward V. Robertson (R)





House of Representatives
The names of members of the House of Representatives elected statewide at-large, are preceded by an "At-Large", and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.

The congressional district numbers are linked to articles describing the district itself. Since the boundaries of the districts have changed often and substantially, the linked article may only describe the district as it exists today, and not as it was at the time of this Congress.

Alabama

 * Alabama's 1st congressional district. Frank W. Boykin (D)
 * Alabama's 2nd congressional district. George M. Grant (D)
 * Alabama's 3rd congressional district. George W. Andrews (D)
 * Alabama's 4th congressional district. Sam Hobbs (D)
 * Alabama's 5th congressional district. Albert Rains (D)
 * Alabama's 6th congressional district. Pete Jarman (D)
 * Alabama's 7th congressional district. Carter Manasco (D)
 * Alabama's 8th congressional district. Robert E. Jones Jr. (D), from January 28, 1947
 * Alabama's 9th congressional district. Laurie C. Battle (D)

Arizona

 * At-large. John R. Murdock (D)
 * At-large. Richard F. Harless (D)

Arkansas

 * Arkansas's 1st congressional district. Ezekiel C. Gathings (D)
 * Arkansas's 2nd congressional district. Wilbur Mills (D)
 * Arkansas's 3rd congressional district. James William Trimble (D)
 * Arkansas's 4th congressional district. William Fadjo Cravens (D)
 * Arkansas's 5th congressional district. Brooks Hays (D)
 * Arkansas's 6th congressional district. William F. Norrell (D)
 * Arkansas's 7th congressional district. Oren Harris (D)

California

 * California's 1st congressional district. Clarence F. Lea (D)
 * California's 2nd congressional district. Clair Engle (D)
 * California's 3rd congressional district. J. Leroy Johnson (R)
 * California's 4th congressional district. Franck R. Havenner (D)
 * California's 5th congressional district. Richard J. Welch (R)
 * California's 6th congressional district. George P. Miller (D)
 * California's 7th congressional district. John J. Allen Jr. (R)
 * California's 8th congressional district. Jack Z. Anderson (R)
 * California's 9th congressional district. Bertrand W. Gearhart (R)
 * California's 10th congressional district. Alfred J. Elliott (D)
 * California's 11th congressional district. Ernest K. Bramblett (R)
 * California's 12th congressional district. Richard Nixon (R)
 * California's 13th congressional district. Norris Poulson (R)
 * California's 14th congressional district. Helen Gahagan Douglas (D)
 * California's 15th congressional district. Gordon L. McDonough (R)
 * California's 16th congressional district. Donald L. Jackson (R)
 * California's 17th congressional district. Cecil R. King (D)
 * California's 18th congressional district. Willis W. Bradley (R)
 * California's 19th congressional district. Chester E. Holifield (D)
 * California's 20th congressional district. John Carl Hinshaw (R)
 * California's 21st congressional district. Harry R. Sheppard (D)
 * California's 22nd congressional district. John R. Phillips (R)
 * California's 23rd congressional district. Charles K. Fletcher (R)

Colorado

 * Colorado's 1st congressional district. John A. Carroll (D)
 * Colorado's 2nd congressional district. William S. Hill (R)
 * Colorado's 3rd congressional district. John Chenoweth (R)
 * Colorado's 4th congressional district. Robert F. Rockwell (R)

Connecticut

 * Connecticut's 1st congressional district. William J. Miller (R)
 * Connecticut's 2nd congressional district. Horace Seely-Brown Jr. (R)
 * Connecticut's 3rd congressional district. Ellsworth Foote (R)
 * Connecticut's 4th congressional district. John Davis Lodge (R)
 * Connecticut's 5th congressional district. James T. Patterson (R)
 * At-large. Antoni Sadlak (R)

Delaware

 * At-large. J. Caleb Boggs (R)

Florida

 * Florida's 1st congressional district. J. Hardin Peterson (D)
 * Florida's 2nd congressional district. Emory H. Price (D)
 * Florida's 3rd congressional district. Robert L. F. Sikes (D)
 * Florida's 4th congressional district. George Smathers (D)
 * Florida's 5th congressional district. Joe Hendricks (D)
 * Florida's 6th congressional district. Dwight L. Rogers (D)

Georgia

 * Georgia's 1st congressional district. Prince Hulon Preston Jr. (D)
 * Georgia's 2nd congressional district. Edward E. Cox (D)
 * Georgia's 3rd congressional district. Stephen Pace (D)
 * Georgia's 4th congressional district. Albert Sidney Camp (D)
 * Georgia's 5th congressional district. James C. Davis (D)
 * Georgia's 6th congressional district. Carl Vinson (D)
 * Georgia's 7th congressional district. Henderson Lovelace Lanham (D)
 * Georgia's 8th congressional district. William McDonald Wheeler (D)
 * Georgia's 9th congressional district. John S. Wood (D)
 * Georgia's 10th congressional district. Paul Brown (D)

Idaho

 * Idaho's 1st congressional district. Abe Goff (R)
 * Idaho's 2nd congressional district. John C. Sanborn (R)

Illinois

 * Illinois's 1st congressional district. William L. Dawson (D)
 * Illinois's 2nd congressional district. Richard B. Vail (R)
 * Illinois's 3rd congressional district. Fred E. Busbey (R)
 * Illinois's 4th congressional district. Martin Gorski (D)
 * Illinois's 5th congressional district. Adolph J. Sabath (D)
 * Illinois's 6th congressional district. Thomas J. O'Brien (D)
 * Illinois's 7th congressional district. Thomas L. Owens (R), until June 7, 1948, vacant thereafter
 * Illinois's 8th congressional district. Thomas S. Gordon (D)
 * Illinois's 9th congressional district. Robert Twyman (R)
 * Illinois's 10th congressional district. Ralph E. Church (R)
 * Illinois's 11th congressional district. Chauncey W. Reed (R)
 * Illinois's 12th congressional district. Noah M. Mason (R)
 * Illinois's 13th congressional district. Leo E. Allen (R)
 * Illinois's 14th congressional district. Anton J. Johnson (R)
 * Illinois's 15th congressional district. Robert B. Chiperfield (R)
 * Illinois's 16th congressional district. Everett M. Dirksen (R)
 * Illinois's 17th congressional district. Leslie C. Arends (R)
 * Illinois's 18th congressional district. Edward H. Jenison (R)
 * Illinois's 19th congressional district. Rolla C. McMillen (R)
 * Illinois's 20th congressional district. Sid Simpson (R)
 * Illinois's 21st congressional district. George Evan Howell (R), until October 5, 1947, vacant thereafter
 * Illinois's 22nd congressional district. Melvin Price (D)
 * Illinois's 23rd congressional district. Charles W. Vursell (R)
 * Illinois's 24th congressional district. Roy Clippinger (R)
 * Illinois's 25th congressional district. C. W. Bishop (R)
 * At-large. William Stratton (R)

Indiana

 * Indiana's 1st congressional district. Ray Madden (D)
 * Indiana's 2nd congressional district. Charles A. Halleck (R)
 * Indiana's 3rd congressional district. Robert A. Grant (R)
 * Indiana's 4th congressional district. George W. Gillie (R)
 * Indiana's 5th congressional district. Forest Harness (R)
 * Indiana's 6th congressional district. Noble J. Johnson (R), until July 1, 1948, vacant for remainder of term
 * Indiana's 7th congressional district. Gerald W. Landis (R)
 * Indiana's 8th congressional district. E. A. Mitchell (R)
 * Indiana's 9th congressional district. Earl Wilson (R)
 * Indiana's 10th congressional district. Raymond S. Springer (R), until August 28, 1947
 * Ralph Harvey (R), from November 4, 1947
 * Indiana's 11th congressional district. Louis Ludlow (D)

Iowa

 * Iowa's 1st congressional district. Thomas E. Martin (R)
 * Iowa's 2nd congressional district. Henry O. Talle (R)
 * Iowa's 3rd congressional district. John W. Gwynne (R)
 * Iowa's 4th congressional district. Karl M. LeCompte (R)
 * Iowa's 5th congressional district. Paul H. Cunningham (R)
 * Iowa's 6th congressional district. James I. Dolliver (R)
 * Iowa's 7th congressional district. Ben F. Jensen (R)
 * Iowa's 8th congressional district. Charles B. Hoeven (R)

Kansas

 * Kansas's 1st congressional district. Albert M. Cole (R)
 * Kansas's 2nd congressional district. Errett P. Scrivner (R)
 * Kansas's 3rd congressional district. Herbert Alton Meyer (R)
 * Kansas's 4th congressional district. Edward Herbert Rees (R)
 * Kansas's 5th congressional district. Clifford R. Hope (R)
 * Kansas's 6th congressional district. Wint Smith (R)

Kentucky

 * Kentucky's 1st congressional district. Noble J. Gregory (D)
 * Kentucky's 2nd congressional district. Earle C. Clements (D), until January 6, 1948
 * John A. Whitaker (D), from April 17, 1948
 * Kentucky's 3rd congressional district. Thruston Ballard Morton (R)
 * Kentucky's 4th congressional district. Frank Chelf (D)
 * Kentucky's 5th congressional district. Brent Spence (D)
 * Kentucky's 6th congressional district. Virgil Chapman (D)
 * Kentucky's 7th congressional district. Wendell H. Meade (R)
 * Kentucky's 8th congressional district. Joe B. Bates (D)
 * Kentucky's 9th congressional district. John M. Robsion (R), until February 17, 1948
 * William Lewis (R), from April 24, 1948

Louisiana

 * Louisiana's 1st congressional district. F. Edward Hébert (D)
 * Louisiana's 2nd congressional district. Hale Boggs (D)
 * Louisiana's 3rd congressional district. James R. Domengeaux (D)
 * Louisiana's 4th congressional district. Overton Brooks (D)
 * Louisiana's 5th congressional district. Otto Passman (D)
 * Louisiana's 6th congressional district. James H. Morrison (D)
 * Louisiana's 7th congressional district. Henry D. Larcade Jr. (D)
 * Louisiana's 8th congressional district. A. Leonard Allen (D)

Maine

 * Maine's 1st congressional district. Robert Hale (R)
 * Maine's 2nd congressional district. Margaret Chase Smith (R)
 * Maine's 3rd congressional district. Frank Fellows (R)

Maryland

 * Maryland's 1st congressional district. Edward Tylor Miller (R)
 * Maryland's 2nd congressional district. Hugh Meade (D)
 * Maryland's 3rd congressional district. Thomas D'Alesandro Jr. (D), until May 16, 1947
 * Maryland's 3rd congressional district. Edward Garmatz (D), from July 15, 1947
 * Maryland's 4th congressional district. George Hyde Fallon (D)
 * Maryland's 5th congressional district. Lansdale G. Sasscer (D)
 * Maryland's 6th congressional district. James Glenn Beall (R)

Massachusetts

 * Massachusetts's 1st congressional district. John W. Heselton (R)
 * Massachusetts's 2nd congressional district. Charles Clason (R)
 * Massachusetts's 3rd congressional district. Philip J. Philbin (D)
 * Massachusetts's 4th congressional district. Harold Donohue (D)
 * Massachusetts's 5th congressional district. Edith Nourse Rogers (R)
 * Massachusetts's 6th congressional district. George J. Bates (R)
 * Massachusetts's 7th congressional district. Thomas J. Lane (D)
 * Massachusetts's 8th congressional district. Angier Goodwin (R)
 * Massachusetts's 9th congressional district. Charles L. Gifford (R), until August 23, 1947
 * Massachusetts's 9th congressional district. Donald W. Nicholson (R), from November 18, 1947
 * Massachusetts's 10th congressional district. Christian Herter (R)
 * Massachusetts's 11th congressional district. John F. Kennedy (D)
 * Massachusetts's 12th congressional district. John W. McCormack (D)
 * Massachusetts's 13th congressional district. Richard B. Wigglesworth (R)
 * Massachusetts's 14th congressional district. Joseph W. Martin Jr. (R)

Michigan

 * Michigan's 1st congressional district. George G. Sadowski (D)
 * Michigan's 2nd congressional district. Earl C. Michener (R)
 * Michigan's 3rd congressional district. Paul W. Shafer (R)
 * Michigan's 4th congressional district. Clare E. Hoffman (R)
 * Michigan's 5th congressional district. Bartel J. Jonkman (R)
 * Michigan's 6th congressional district. William W. Blackney (R)
 * Michigan's 7th congressional district. Jesse P. Wolcott (R)
 * Michigan's 8th congressional district. Fred L. Crawford (R)
 * Michigan's 9th congressional district. Albert J. Engel (R)
 * Michigan's 10th congressional district. Roy O. Woodruff (R)
 * Michigan's 11th congressional district. Fred Bradley (R), until May 24, 1947
 * Charles E. Potter (R), from August 26, 1947
 * Michigan's 12th congressional district. John B. Bennett (R)
 * Michigan's 13th congressional district. Howard A. Coffin (R)
 * Michigan's 14th congressional district. Harold F. Youngblood (R)
 * Michigan's 15th congressional district. John Dingell Sr. (D)
 * Michigan's 16th congressional district. John Lesinski Sr. (D)
 * Michigan's 17th congressional district. George Anthony Dondero (R)

Minnesota

 * Minnesota's 1st congressional district. August H. Andresen (R)
 * Minnesota's 2nd congressional district. Joseph P. O'Hara (R)
 * Minnesota's 3rd congressional district. George MacKinnon (R)
 * Minnesota's 4th congressional district. Edward Devitt (R)
 * Minnesota's 5th congressional district. Walter Judd (R)
 * Minnesota's 6th congressional district. Harold Knutson (R)
 * Minnesota's 7th congressional district. Herman Carl Andersen (R)
 * Minnesota's 8th congressional district. John Blatnik (DFL)
 * Minnesota's 9th congressional district. Harold Hagen (R)

Mississippi

 * Mississippi's 1st congressional district. John E. Rankin (D)
 * Mississippi's 2nd congressional district. Jamie L. Whitten (D)
 * Mississippi's 3rd congressional district. William M. Whittington (D)
 * Mississippi's 4th congressional district. Thomas Abernethy (D)
 * Mississippi's 5th congressional district. W. Arthur Winstead (D)
 * Mississippi's 6th congressional district. William M. Colmer (D)
 * Mississippi's 7th congressional district. John Bell Williams (D)

Missouri

 * Missouri's 1st congressional district. Samuel W. Arnold (R)
 * Missouri's 2nd congressional district. Max Schwabe (R)
 * Missouri's 3rd congressional district. William Clay Cole (R)
 * Missouri's 4th congressional district. C. Jasper Bell (D)
 * Missouri's 5th congressional district. Albert L. Reeves Jr. (R)
 * Missouri's 6th congressional district. Marion T. Bennett (R)
 * Missouri's 7th congressional district. Dewey Short (R)
 * Missouri's 8th congressional district. Parke M. Banta (R)
 * Missouri's 9th congressional district. Clarence Cannon (D)
 * Missouri's 10th congressional district. Orville Zimmerman (D), until April 7, 1948
 * Paul C. Jones (D), from November 2, 1948
 * Missouri's 11th congressional district. Claude I. Bakewell (R)
 * Missouri's 12th congressional district. Walter C. Ploeser (R)
 * Missouri's 13th congressional district. Frank M. Karsten (D)

Montana

 * Montana's 1st congressional district. Mike Mansfield (D)
 * Montana's 2nd congressional district. Wesley A. D'Ewart (R)

Nebraska

 * Nebraska's 1st congressional district. Carl Curtis (R)
 * Nebraska's 2nd congressional district. Howard Buffett (R)
 * Nebraska's 3rd congressional district. Karl Stefan (R)
 * Nebraska's 4th congressional district. Arthur L. Miller (R)

Nevada

 * At-large. Charles H. Russell (R)

New Hampshire

 * New Hampshire's 1st congressional district. Chester Earl Merrow (R)
 * New Hampshire's 2nd congressional district. Norris Cotton (R)

New Jersey

 * New Jersey's 1st congressional district. Charles A. Wolverton (R)
 * New Jersey's 2nd congressional district. T. Millet Hand (R)
 * New Jersey's 3rd congressional district. James C. Auchincloss (R)
 * New Jersey's 4th congressional district. Frank A. Mathews Jr. (R)
 * New Jersey's 5th congressional district. Charles A. Eaton (R)
 * New Jersey's 6th congressional district. Clifford P. Case (R)
 * New Jersey's 7th congressional district. J. Parnell Thomas (R)
 * New Jersey's 8th congressional district. Gordon Canfield (R)
 * New Jersey's 9th congressional district. Harry L. Towe (R)
 * New Jersey's 10th congressional district. Fred A. Hartley Jr. (R)
 * New Jersey's 11th congressional district. Frank Sundstrom (R)
 * New Jersey's 12th congressional district. Robert Kean (R)
 * New Jersey's 13th congressional district. Mary T. Norton (D)
 * New Jersey's 14th congressional district. Edward J. Hart (D)

New Mexico

 * At-large. Georgia Lee Lusk (D)
 * At-large. Antonio M. Fernández (D)

New York

 * New York's 1st congressional district. W. Kingsland Macy (R)
 * New York's 2nd congressional district. Leonard W. Hall (R)
 * New York's 3rd congressional district. Henry J. Latham (R)
 * New York's 4th congressional district. Gregory McMahon (R)
 * New York's 5th congressional district. Robert Tripp Ross (R)
 * New York's 6th congressional district. Robert Nodar Jr. (R)
 * New York's 7th congressional district. John J. Delaney (D), until November 18, 1948
 * Vacant thereafter
 * New York's 8th congressional district. Joseph L. Pfeifer (D)
 * New York's 9th congressional district. Eugene J. Keogh (D)
 * New York's 10th congressional district. Andrew L. Somers (D)
 * New York's 11th congressional district. James J. Heffernan (D)
 * New York's 12th congressional district. John J. Rooney (D)
 * New York's 13th congressional district. Donald L. O'Toole (D)
 * New York's 14th congressional district. Leo F. Rayfiel (D), until September 13, 1947
 * Abraham J. Multer (D), from November 4, 1947
 * New York's 15th congressional district. Emanuel Celler (D)
 * New York's 16th congressional district. Ellsworth B. Buck (R)
 * New York's 17th congressional district. Frederic René Coudert Jr. (R)
 * New York's 18th congressional district. Vito Marcantonio (AL)
 * New York's 19th congressional district. Arthur George Klein (D)
 * New York's 20th congressional district. Sol Bloom (D)
 * New York's 21st congressional district. Jacob Javits (R)
 * New York's 22nd congressional district. Adam Clayton Powell Jr. (D)
 * New York's 23rd congressional district. Walter A. Lynch (D)
 * New York's 24th congressional district. Benjamin J. Rabin (D), until December 31, 1947
 * Leo Isacson (AL), from February 17, 1948
 * New York's 25th congressional district. Charles A. Buckley (D)
 * New York's 26th congressional district. David M. Potts (R)
 * New York's 27th congressional district. Ralph W. Gwinn (R)
 * New York's 28th congressional district. Ralph A. Gamble (R)
 * New York's 29th congressional district. Katharine St. George (R)
 * New York's 30th congressional district. Jay Le Fevre (R)
 * New York's 31st congressional district. Bernard W. Kearney (R)
 * New York's 32nd congressional district. William T. Byrne (D)
 * New York's 33rd congressional district. Dean P. Taylor (R)
 * New York's 34th congressional district. Clarence E. Kilburn (R)
 * New York's 35th congressional district. Hadwen C. Fuller (R)
 * New York's 36th congressional district. R. Walter Riehlman (R)
 * New York's 37th congressional district. Edwin Arthur Hall (R)
 * New York's 38th congressional district. John Taber (R)
 * New York's 39th congressional district. W. Sterling Cole (R)
 * New York's 40th congressional district. Kenneth Keating (R)
 * New York's 41st congressional district. James W. Wadsworth Jr. (R)
 * New York's 42nd congressional district. Walter G. Andrews (R)
 * New York's 43rd congressional district. Edward J. Elsaesser (R)
 * New York's 44th congressional district. John Cornelius Butler (R)
 * New York's 45th congressional district. Daniel A. Reed (R)

North Carolina

 * North Carolina's 1st congressional district. Herbert Covington Bonner (D)
 * North Carolina's 2nd congressional district. John H. Kerr (D)
 * North Carolina's 3rd congressional district. Graham A. Barden (D)
 * North Carolina's 4th congressional district. Harold D. Cooley (D)
 * North Carolina's 5th congressional district. John Hamlin Folger (D)
 * North Carolina's 6th congressional district. Carl T. Durham (D)
 * North Carolina's 7th congressional district. J. Bayard Clark (D)
 * North Carolina's 8th congressional district. Charles B. Deane (D)
 * North Carolina's 9th congressional district. Robert L. Doughton (D)
 * North Carolina's 10th congressional district. Hamilton C. Jones (D)
 * North Carolina's 11th congressional district. Alfred L. Bulwinkle (D)
 * North Carolina's 12th congressional district. Monroe Minor Redden (D)

North Dakota

 * At-large. William Lemke (R-NPL)
 * At-large. Charles R. Robertson (R)

Ohio

 * Ohio's 1st congressional district. Charles H. Elston (R)
 * Ohio's 2nd congressional district. William E. Hess (R)
 * Ohio's 3rd congressional district. Raymond H. Burke (R)
 * Ohio's 4th congressional district. Robert Franklin Jones (R), until September 2, 1947
 * William Moore McCulloch (R), from November 4, 1947
 * Ohio's 5th congressional district. Cliff Clevenger (R)
 * Ohio's 6th congressional district. Edward Oscar McCowen (R)
 * Ohio's 7th congressional district. Clarence J. Brown (R)
 * Ohio's 8th congressional district. Frederick Cleveland Smith (R)
 * Ohio's 9th congressional district. Homer A. Ramey (R)
 * Ohio's 10th congressional district. Thomas A. Jenkins (R)
 * Ohio's 11th congressional district. Walter E. Brehm (R)
 * Ohio's 12th congressional district. John M. Vorys (R)
 * Ohio's 13th congressional district. Alvin F. Weichel (R)
 * Ohio's 14th congressional district. Walter B. Huber (D)
 * Ohio's 15th congressional district. Percy W. Griffiths (R)
 * Ohio's 16th congressional district. Henderson H. Carson (R)
 * Ohio's 17th congressional district. J. Harry McGregor (R)
 * Ohio's 18th congressional district. Earl R. Lewis (R)
 * Ohio's 19th congressional district. Michael J. Kirwan (D)
 * Ohio's 20th congressional district. Michael A. Feighan (D)
 * Ohio's 21st congressional district. Robert Crosser (D)
 * Ohio's 22nd congressional district. Frances P. Bolton (R)
 * At-large. George H. Bender (R)

Oklahoma

 * Oklahoma's 1st congressional district. George B. Schwabe (R)
 * Oklahoma's 2nd congressional district. William G. Stigler (D)
 * Oklahoma's 3rd congressional district. Carl Albert (D)
 * Oklahoma's 4th congressional district. Glen D. Johnson (D)
 * Oklahoma's 5th congressional district. A. S. Mike Monroney (D)
 * Oklahoma's 6th congressional district. Toby Morris (D)
 * Oklahoma's 7th congressional district. Preston E. Peden (D)
 * Oklahoma's 8th congressional district. Ross Rizley (R)

Oregon

 * Oregon's 1st congressional district. A. Walter Norblad (R)
 * Oregon's 2nd congressional district. Lowell Stockman (R)
 * Oregon's 3rd congressional district. Homer D. Angell (R)
 * Oregon's 4th congressional district. Harris Ellsworth (R)

Pennsylvania

 * Pennsylvania's 1st congressional district. James A. Gallagher (R)
 * Pennsylvania's 2nd congressional district. Robert N. McGarvey (R)
 * Pennsylvania's 3rd congressional district. Hardie Scott (R)
 * Pennsylvania's 4th congressional district. Franklin J. Maloney (R)
 * Pennsylvania's 5th congressional district. George W. Sarbacher Jr. (R)
 * Pennsylvania's 6th congressional district. Hugh Scott (R)
 * Pennsylvania's 7th congressional district. E. Wallace Chadwick (R)
 * Pennsylvania's 8th congressional district. Charles L. Gerlach (R), until May 5, 1947
 * Franklin H. Lichtenwalter (R), from September 9, 1947
 * Pennsylvania's 9th congressional district. Paul B. Dague (R)
 * Pennsylvania's 10th congressional district. James P. Scoblick (R)
 * Pennsylvania's 11th congressional district. Mitchell Jenkins (R)
 * Pennsylvania's 12th congressional district. Ivor D. Fenton (R)
 * Pennsylvania's 13th congressional district. Frederick Augustus Muhlenberg (R)
 * Pennsylvania's 14th congressional district. Wilson D. Gillette (R)
 * Pennsylvania's 15th congressional district. Robert F. Rich (R)
 * Pennsylvania's 16th congressional district. Samuel K. McConnell Jr. (R)
 * Pennsylvania's 17th congressional district. Richard M. Simpson (R)
 * Pennsylvania's 18th congressional district. John C. Kunkel (R)
 * Pennsylvania's 19th congressional district. Leon H. Gavin (R)
 * Pennsylvania's 20th congressional district. Francis E. Walter (D)
 * Pennsylvania's 21st congressional district. Chester H. Gross (R)
 * Pennsylvania's 22nd congressional district. James E. Van Zandt (R)
 * Pennsylvania's 23rd congressional district. William J. Crow (R)
 * Pennsylvania's 24th congressional district. Thomas E. Morgan (D)
 * Pennsylvania's 25th congressional district. Louis E. Graham (R)
 * Pennsylvania's 26th congressional district. Harve Tibbott (R)
 * Pennsylvania's 27th congressional district. Augustine B. Kelley (D)
 * Pennsylvania's 28th congressional district. Carroll D. Kearns (R)
 * Pennsylvania's 29th congressional district. John McDowell (R)
 * Pennsylvania's 30th congressional district. Robert J. Corbett (R)
 * Pennsylvania's 31st congressional district. James G. Fulton (R)
 * Pennsylvania's 32nd congressional district. Herman P. Eberharter (D)
 * Pennsylvania's 33rd congressional district. Frank Buchanan (D)

Rhode Island

 * Rhode Island's 1st congressional district. Aime Forand (D)
 * Rhode Island's 2nd congressional district. John E. Fogarty (D)

South Carolina

 * South Carolina's 1st congressional district. L. Mendel Rivers (D)
 * South Carolina's 2nd congressional district. John J. Riley (D)
 * South Carolina's 3rd congressional district. William Jennings Bryan Dorn (D)
 * South Carolina's 4th congressional district. Joseph R. Bryson (D)
 * South Carolina's 5th congressional district. James P. Richards (D)
 * South Carolina's 6th congressional district. John L. McMillan (D)

South Dakota

 * South Dakota's 1st congressional district. Karl E. Mundt (R), until December 30, 1948, vacant thereafter
 * South Dakota's 2nd congressional district. Francis H. Case (R)

Tennessee

 * Tennessee's 1st congressional district. Dayton E. Phillips (R)
 * Tennessee's 2nd congressional district. John Jennings Jr. (R)
 * Tennessee's 3rd congressional district. Estes Kefauver (D)
 * Tennessee's 4th congressional district. Albert Gore Sr. (D)
 * Tennessee's 5th congressional district. Joe L. Evins (D)
 * Tennessee's 6th congressional district. Percy Priest (D)
 * Tennessee's 7th congressional district. W. Wirt Courtney (D)
 * Tennessee's 8th congressional district. Tom J. Murray (D)
 * Tennessee's 9th congressional district. Jere Cooper (D)
 * Tennessee's 10th congressional district. Clifford Davis (D)

Texas

 * Texas's 1st congressional district. Wright Patman (D)
 * Texas's 2nd congressional district. Jesse M. Combs (D)
 * Texas's 3rd congressional district. Lindley Beckworth (D)
 * Texas's 4th congressional district. Sam Rayburn (D)
 * Texas's 5th congressional district. Joseph Franklin Wilson (D)
 * Texas's 6th congressional district. Olin E. Teague (D)
 * Texas's 7th congressional district. Tom Pickett (D)
 * Texas's 8th congressional district. Albert Thomas (D)
 * Texas's 9th congressional district. Joseph J. Mansfield (D), until July 12, 1947
 * Clark W. Thompson (D), from August 23, 1947
 * Texas's 10th congressional district. Lyndon B. Johnson (D)
 * Texas's 11th congressional district. William R. Poage (D)
 * Texas's 12th congressional district. Wingate H. Lucas (D)
 * Texas's 13th congressional district. Ed Gossett (D)
 * Texas's 14th congressional district. John E. Lyle Jr. (D)
 * Texas's 15th congressional district. Milton H. West (D), until October 28, 1948
 * Lloyd Bentsen (D), from December 4, 1948
 * Texas's 16th congressional district. R. Ewing Thomason (D), until July 31, 1947
 * Kenneth M. Regan (D), from August 23, 1947
 * Texas's 17th congressional district. Omar Burleson (D)
 * Texas's 18th congressional district. Eugene Worley (D)
 * Texas's 19th congressional district. George H. Mahon (D)
 * Texas's 20th congressional district. Paul J. Kilday (D)
 * Texas's 21st congressional district. O. C. Fisher (D)

Utah

 * Utah's 1st congressional district. Walter K. Granger (D)
 * Utah's 2nd congressional district. William A. Dawson (R)

Vermont

 * At-large. Charles A. Plumley (R)

Virginia

 * Virginia's 1st congressional district. S. Otis Bland (D)
 * Virginia's 2nd congressional district. Porter Hardy Jr. (D)
 * Virginia's 3rd congressional district. J. Vaughan Gary (D)
 * Virginia's 4th congressional district. Patrick H. Drewry (D), until December 21, 1947
 * Watkins Moorman Abbitt (D), from February 17, 1948
 * Virginia's 5th congressional district. Thomas B. Stanley (D)
 * Virginia's 6th congressional district. J. Lindsay Almond (D), until April 17, 1948
 * Clarence G. Burton (D), from November 2, 1948
 * Virginia's 7th congressional district. Burr Harrison (D)
 * Virginia's 8th congressional district. Howard W. Smith (D)
 * Virginia's 9th congressional district. John W. Flannagan Jr. (D)

Washington

 * Washington's 1st congressional district. Homer Jones (R)
 * Washington's 2nd congressional district. Henry M. Jackson (D)
 * Washington's 3rd congressional district. Fred B. Norman (R), until April 18, 1947
 * Russell V. Mack (R), from June 7, 1947
 * Washington's 4th congressional district. Hal Holmes (R)
 * Washington's 5th congressional district. Walt Horan (R)
 * Washington's 6th congressional district. Thor C. Tollefson (R)

West Virginia

 * West Virginia's 1st congressional district. Francis J. Love (R)
 * West Virginia's 2nd congressional district. Melvin C. Snyder (R)
 * West Virginia's 3rd congressional district. Edward G. Rohrbough (R)
 * West Virginia's 4th congressional district. Hubert S. Ellis (R)
 * West Virginia's 5th congressional district. John Kee (D)
 * West Virginia's 6th congressional district. E. H. Hedrick (D)

Wisconsin

 * Wisconsin's 1st congressional district. Lawrence H. Smith (R)
 * Wisconsin's 2nd congressional district. Glenn Robert Davis (R), from April 22, 1947
 * Wisconsin's 3rd congressional district. William H. Stevenson (R)
 * Wisconsin's 4th congressional district. John C. Brophy (R)
 * Wisconsin's 5th congressional district. Charles J. Kersten (R)
 * Wisconsin's 6th congressional district. Frank Bateman Keefe (R)
 * Wisconsin's 7th congressional district. Reid F. Murray (R)
 * Wisconsin's 8th congressional district. John W. Byrnes (R)
 * Wisconsin's 9th congressional district. Merlin Hull (R)
 * Wisconsin's 10th congressional district. Alvin O'Konski (R)

Wyoming

 * At-large. Frank A. Barrett (R)

Non-voting members

 * Alaska Territory's at-large congressional district. Bob Bartlett (D)
 * Hawaii Territory's at-large congressional district. Joseph Rider Farrington (R)
 * Puerto Rico's at-large congressional district. Antonio Fernós-Isern (Resident Commissioner) (PPD)

Changes in membership
The count below reflects changes from the beginning of the first session of this Congress

Senate
There were three deaths, two resignations, and one lost mid-term election.

(1) Successor was elected November 17, 1947.
 * Mississippi
 * Mississippi
 * | Theodore G. Bilbo (D)
 * Died August 21, 1947.
 * | John C. Stennis (D)
 * November 17, 1947

(3) Successor was appointed to continue the term.
 * Louisiana
 * Louisiana
 * | John H. Overton (D)
 * Died May 14, 1948.
 * | William C. Feazel (D)
 * May 18, 1948

(2) Successor was appointed to finish the term.
 * South Dakota
 * South Dakota
 * | Harlan J. Bushfield (R)
 * Died September 27, 1948.
 * | Vera C. Bushfield (R)
 * October 6, 1948

(2) Successor was appointed to finish the term.
 * South Dakota
 * South Dakota
 * | Vera C. Bushfield (R)
 * Interim appointee resigned December 26, 1948.
 * | Karl E. Mundt (R)
 * December 31, 1948

(3) Successor was elected December 31, 1948.
 * Louisiana
 * Louisiana
 * | William C. Feazel (D)
 * Interim appointee retired when successor elected.
 * | Russell B. Long (D)
 * December 31, 1948

(2) Successor was elected December 31, 1948.
 * North Carolina
 * North Carolina
 * | William B. Umstead (D)
 * Interim appointee lost election to finish the term.
 * | J. Melville Broughton (D)
 * December 31, 1948


 * }

House of Representatives
There were nine deaths and seven resignations.


 * Alabama's 8th congressional district
 * Vacant
 * style="font-size:80%" | John Sparkman resigned in previous Congress after being elected to the US Senate having been re-elected as well.
 * | Robert E. Jones Jr. (D)
 * Seated January 28, 1947
 * Wisconsin's 2nd congressional district
 * Vacant
 * style="font-size:80%" | Representative Robert Kirkland Henry died during previous Congress having been previously re-elected.
 * | Glenn Robert Davis (R)
 * Seated April 22, 1947
 * Washington's 3rd congressional district
 * | Fred B. Norman (R)
 * style="font-size:80%" | Died April 18, 1947
 * | Russell V. Mack (R)
 * Seated June 7, 1947
 * Pennsylvania's 8th congressional district
 * | Charles L. Gerlach (R)
 * style="font-size:80%" | Died May 5, 1947
 * | Franklin H. Lichtenwalter (R)
 * Seated September 9, 1947
 * Maryland's 3rd congressional district
 * | Thomas D'Alesandro Jr. (D)
 * style="font-size:80%" | Resigned May 16, 1947, after being elected Mayor of Baltimore
 * | Edward Garmatz (D)
 * Seated July 15, 1947
 * Michigan's 11th congressional district
 * | Frederick Van Ness Bradley (R)
 * style="font-size:80%" | Died May 24, 1947
 * | Charles E. Potter (R)
 * Seated August 26, 1947
 * Texas's 9th congressional district
 * | Joseph J. Mansfield (D)
 * style="font-size:80%" | Died July 12, 1947
 * | Clark W. Thompson (D)
 * Seated August 23, 1947
 * Texas's 16th congressional district
 * | R. Ewing Thomason (D)
 * style="font-size:80%" | Resigned July 31, 1947, after being appointed as a judge of the US District Court for the Western District of Texas
 * | Kenneth M. Regan (D)
 * Seated August 23, 1947
 * Massachusetts's 9th congressional district
 * | Charles L. Gifford (R)
 * style="font-size:80%" | Died August 23, 1947
 * | Donald W. Nicholson (R)
 * Seated November 18, 1947
 * Indiana's 10th congressional district
 * | Raymond S. Springer (R)
 * style="font-size:80%" | Died August 28, 1947
 * | Ralph Harvey (R)
 * Seated November 4, 1947
 * Ohio's 4th congressional district
 * | Robert Franklin Jones (R)
 * style="font-size:80%" | Resigned September 2, 1947, to become a member of the Federal Communications Commission
 * | William Moore McCulloch (R)
 * Seated November 4, 1947
 * New York's 14th congressional district
 * | Leo F. Rayfiel (D)
 * style="font-size:80%" | Resigned September 13, 1947, having been appointed a judge of the United States District Court for the Eastern District of New York
 * | Abraham J. Multer (D)
 * Seated November 4, 1947
 * Illinois's 21st congressional district
 * | George Evan Howell (R)
 * style="font-size:80%" | Resigned October 5, 1947, after being appointed judge of the US Court of Claims
 * colspan=2 | Vacant until next Congress
 * Virginia's 4th congressional district
 * | Patrick H. Drewry (D)
 * style="font-size:80%" | Died December 21, 1947
 * | Watkins Moorman Abbitt (D)
 * Seated February 17, 1948
 * New York's 24th congressional district
 * | Benjamin J. Rabin (D)
 * style="font-size:80%" | Resigned December 31, 1947
 * | Leo Isacson (AL)
 * Seated February 17, 1948
 * Kentucky's 2nd congressional district
 * | Earle Clements (D)
 * style="font-size:80%" | Resigned January 6, 1948, to become Governor of Kentucky
 * | John A. Whitaker (D)
 * Seated April 17, 1948
 * Kentucky's 9th congressional district
 * | John M. Robsion (R)
 * style="font-size:80%" | Died February 17, 1948
 * | William Lewis (R)
 * Seated April 24, 1948
 * Missouri's 10th congressional district
 * | Orville Zimmerman (D)
 * style="font-size:80%" | Died April 7, 1948
 * | Paul C. Jones (D)
 * Seated November 2, 1948
 * Virginia's 6th congressional district
 * | J. Lindsay Almond (D)
 * style="font-size:80%" | Resigned April 17, 1948, having been elected attorney General of Virginia
 * | Clarence G. Burton (D)
 * Seated November 2, 1948
 * Illinois's 7th congressional district
 * | Thomas L. Owens (R)
 * style="font-size:80%" | Died June 7, 1948
 * colspan=2 | Vacant until next Congress
 * Indiana's 6th congressional district
 * | Noble J. Johnson (R)
 * style="font-size:80%" | Resigned July 1, 1948, after being appointed as judge of US Court of Customs & Patent Appeals
 * colspan=2 | Vacant until next Congress
 * Texas's 15th congressional district
 * | Milton H. West (D)
 * style="font-size:80%" | Died October 28, 1948
 * | Lloyd Bentsen (D)
 * Seated December 4, 1948
 * New York's 7th congressional district
 * | John J. Delaney (D)
 * style="font-size:80%" | Died November 18, 1948
 * colspan=2 | Vacant until next Congress
 * South Dakota's 1st congressional district
 * | Karl E. Mundt (R)
 * style="font-size:80%" | Resigned December 30, 1948, after being appointed to the U.S. Senate having already been elected.
 * colspan=2 | Vacant until next Congress
 * }
 * style="font-size:80%" | Died June 7, 1948
 * colspan=2 | Vacant until next Congress
 * Indiana's 6th congressional district
 * | Noble J. Johnson (R)
 * style="font-size:80%" | Resigned July 1, 1948, after being appointed as judge of US Court of Customs & Patent Appeals
 * colspan=2 | Vacant until next Congress
 * Texas's 15th congressional district
 * | Milton H. West (D)
 * style="font-size:80%" | Died October 28, 1948
 * | Lloyd Bentsen (D)
 * Seated December 4, 1948
 * New York's 7th congressional district
 * | John J. Delaney (D)
 * style="font-size:80%" | Died November 18, 1948
 * colspan=2 | Vacant until next Congress
 * South Dakota's 1st congressional district
 * | Karl E. Mundt (R)
 * style="font-size:80%" | Resigned December 30, 1948, after being appointed to the U.S. Senate having already been elected.
 * colspan=2 | Vacant until next Congress
 * }
 * | Karl E. Mundt (R)
 * style="font-size:80%" | Resigned December 30, 1948, after being appointed to the U.S. Senate having already been elected.
 * colspan=2 | Vacant until next Congress
 * }

Senate

 * Agriculture and Forestry (Chairman: Arthur Capper; Ranking Member: Elmer Thomas)
 * Appropriations (Chairman: Styles Bridges; Ranking Member: Kenneth McKellar)
 * Armed Services (Chairman: Chan Gurney; Ranking Member: Millard E. Tydings)
 * Banking and Currency (Chairman: Charles W. Tobey; Ranking Member: Robert F. Wagner)
 * Civil Service (Chairman: William Langer; Ranking Member: Dennis Chavez)
 * District of Columbia (Chairman: C. Douglass Buck; Ranking Member: N/A)
 * Expenditures in Executive Departments (Chairman: George D. Aiken; Ranking Member: John L. McClellan)
 * Finance (Chairman: Eugene D. Millikin; Ranking Member: Walter F. George)
 * Foreign Relations (Chairman: Arthur H. Vandenberg; Ranking Member: Tom Connally)
 * Interstate and Foreign Commerce (Chairman: Wallace H. White Jr.; Ranking Member: Edwin C. Johnson)
 * Investigate the National Defense Program (Special) (Chairman: Owen Brewster)
 * Judiciary (Chairman: Alexander Wiley; Ranking Member: Pat McCarran)
 * Labor and Public Welfare (Chairman: Robert A. Taft; Ranking Member: Elbert D. Thomas)
 * Petroleum Resources (Special)
 * Public Lands (Chairman: Hugh A. Butler; Ranking Member: Carl A. Hatch)
 * Public Works (Chairman: W. Chapman Revercomb; Ranking Member: John H. Overton)
 * Remodeling the Senate Chamber (Special)
 * Rules and Administration (Chairman: C. Wayland Brooks; Ranking Member: Carl Hayden)
 * Small Business Enterprises (Special) (Chairman: Kenneth S. Wherry)
 * Whole

House of Representatives

 * Agriculture (Chairman: Clifford R. Hope; Ranking Member: John W. Flannagan Jr.)
 * Appropriations (Chairman: John Taber; Ranking Member: Clarence Cannon)
 * Armed Services (Chairman: Walter G. Andrews; Ranking Member: Carl Vinson)
 * Banking and Currency (Chairman: Jesse P. Wolcott; Ranking Member: Brent Spence)
 * District of Columbia (Chairman: Everett M. Dirksen; Ranking Member: John L. McMillan)
 * Education and Labor (Chairman: Fred A. Hartley Jr.; Ranking Member: John Lesinski)
 * Expenditures in the Executive Departments (Chairman: Clare E. Hoffman; Ranking Member: Carter Manasco)
 * Foreign Affairs (Chairman: Charles Aubrey Eaton; Ranking Member: Sol Bloom)
 * Foreign Aid (Select) (Chairman: Charles Aubrey Eaton)
 * House Administration (Chairman: Karl M. LeCompte; Ranking Member: Mary Teresa Norton)
 * Investigate Commodity Transactions (Select) (Chairman: August H. Andresen)
 * Investigate Federal Communications Commission (Select) (Chairman: Forest A. Harness)
 * Interstate and Foreign Commerce (Chairman: Charles A. Wolverton; Ranking Member: Clarence F. Lea)
 * Judiciary (Chairman: Earl C. Michener; Ranking Member: Emanuel Celler)
 * Merchant Marine and Fisheries (Chairman: Alvin F. Weichel; Ranking Member: S. Otis Bland)
 * Newsprint and Paper Supply (Select) (Chairman: N/A; Ranking Member: N/A)
 * Post Office and Civil Service (Chairman: Edward H. Rees; Ranking Member: Tom J. Murray)
 * Public Lands (Chairman: Richard J. Welch; Ranking Member: Andrew L. Somers)
 * Public Works (Chairman: George Anthony Dondero; Ranking Member: Joseph J. Mansfield then William M. Whittington)
 * Rules (Chairman: Leo E. Allen; Ranking Member: Adolph J. Sabath)
 * Small Business (Select) (Chairman: Walter C. Ploeser)
 * Standards of Official Conduct
 * Un-American Activities (Chairman: J. Parnell Thomas; Ranking Member: John S. Wood)
 * Veterans' Affairs (Chairman: Edith Nourse Rogers; Ranking Member: John E. Rankin)
 * Ways and Means (Chairman: Harold Knutson; Ranking Member: Robert L. Doughton)
 * Whole

Joint committees

 * Atomic Energy (Chairman: Sen. Bourke B. Hickenlooper; Vice Chairman: Rep. W. Sterling Cole)
 * Conditions of Indian Tribes (Special)
 * Economic (Chairman: Sen. Robert A. Taft; Vice Chairman: Rep. Jesse P. Wolcott)
 * Disposition of Executive Papers
 * Foreign Economic Cooperation
 * Housing
 * Labor Management Relations
 * Legislative Budget
 * The Library (Chairman: Sen. C. Wayland Brooks)
 * To Study Pacific Islands
 * Printing (Chairman: Sen. William E. Jenner; Vice Chairman: Rep. Karl M. LeCompte)
 * Reduction of Nonessential Federal Expenditures (Chairman: Sen. Harry F. Byrd; Vice Chairman: Rep. Robert L. Doughton)
 * Selective Service Deferments
 * Taxation (Chairman: Rep. Harold Knutson; Vice Chairman: Sen. Eugene D. Millikin)

Legislative branch agency directors

 * Architect of the Capitol: David Lynn
 * Attending Physician of the United States Congress: George Calver
 * Comptroller General of the United States: Lindsay C. Warren
 * Librarian of Congress: Luther H. Evans
 * Public Printer of the United States: Augustus E. Giegengack, until 1948
 * John J. Deviny, from 1948

Senate

 * Chaplain: Peter Marshall (Presbyterian)
 * Parliamentarian: Charles Watkins
 * Secretary: Carl A. Loeffler
 * Librarian: George W. Straubinger
 * Secretary for the Majority: J. Mark Trice
 * Secretary for the Minority: Felton McLellan Johnston
 * Sergeant at Arms: Edward F. McGinnis

House of Representatives

 * Chaplain: James Shera Montgomery (Methodist)
 * Clerk: John Andrews
 * Doorkeeper: M. L. Meletio
 * Parliamentarian: Lewis Deschler
 * Postmaster: Frank W. Collier, until October 15, 1948; vacant thereafter
 * Reading Clerks: George J. Maurer (D) and Alney E. Chaffee (R)
 * Sergeant at Arms: William F. Russell