Wikipedia:WikiProject National Register of Historic Places/Progress/Duplicates

National
The following listings are included in two or more lists which are located in different states.

Mobile County, Alabama
There are no duplications across sublists of Mobile County, Alabama.

Maricopa County, Arizona
There are no duplications across sublists of Maricopa County, Arizona.

Yavapai County, Arizona
There are no duplications across sublists of Yavapai County, Arizona.

Pulaski County, Arkansas
There are no duplications across sublists of Pulaski County, Arkansas.

Middlesex County, Connecticut
There are no duplications across sublists of Middlesex County, Connecticut.

New Castle County, Delaware
There are no duplications across sublists of New Castle County, Delaware.

Hillsborough County, Florida
There are no duplications across sublists of Hillsborough County, Florida.

Honolulu County, Hawaii
There are no duplications across sublists of Honolulu County, Hawaii.

Maui County, Hawaii
There are no duplications across sublists of Maui County, Hawaii.

Hawaii Statewide
There are no duplications across sublists of Hawaii.

Polk County, Iowa
There are no duplications across sublists of Polk County, Iowa.

Jefferson County, Kentucky
There are no duplications across sublists of Jefferson County, Kentucky.

Louisiana
There are no duplications across sublists of Louisiana.

Cumberland County, Maine
There are no duplications across sublists of Cumberland County, Maine.

City of Baltimore, Maryland
There are no duplications across sublists of City of Baltimore, Maryland.

Hampden County, Massachusetts
There are no duplications across sublists of Hampden County, Massachusetts.

St. Louis, Missouri
There are no duplications across sublists of St. Louis, Missouri.

New Hampshire
There are no duplications across sublists of New Hampshire.

Bergen County, New Jersey
There are no duplications across sublists of Bergen County, New Jersey.

Erie County, New York
There are no duplications across sublists of Erie County, New York.

Nassau County, New York
There are no duplications across sublists of Nassau County, New York.

Niagara County, New York
There are no duplications across sublists of Niagara County, New York.

Erie County, Ohio
There are no duplications across sublists of Erie County, Ohio.

Franklin County, Ohio
There are no duplications across sublists of Franklin County, Ohio.

Greenville County, South Carolina
There are no duplications across sublists of Greenville County, South Carolina.

Richland County, South Carolina
There are no duplications across sublists of Richland County, South Carolina.

York County, South Carolina
There are no duplications across sublists of York County, South Carolina.

Harris County, Texas
There are no duplications across sublists of Harris County, Texas.

Salt Lake County, Utah
There are no duplications across sublists of Salt Lake County, Utah.

King County, Washington
There are no duplications across sublists of King County, Washington.

Pierce County, Washington
There are no duplications across sublists of Pierce County, Washington.

Spokane County, Washington
There are no duplications across sublists of Spokane County, Washington.

Dane County, Wisconsin
There are no duplications across sublists of Dane County, Wisconsin.

Milwaukee County, Wisconsin
There are no duplications across sublists of Milwaukee County, Wisconsin.

Virgin Islands
There are no duplications across sublists of Virgin Islands.

Northern Mariana Islands
There are no duplications across sublists of Northern Mariana Islands.

American Samoa
There are no duplications across sublists of American Samoa.

Federated States of Micronesia
There are no duplications across sublists of Federated States of Micronesia.

Palau
There are no duplications across sublists of Palau.

Marshall Islands
There are no duplications across sublists of Marshall Islands.

U.S. Minor Outlying Islands
There are no duplications across sublists of U.S. Minor Outlying Islands.