New Jersey's 3rd congressional district

New Jersey's 3rd congressional district is represented by Democrat Andy Kim of Moorestown who has served in Congress since 2019.

Under the 2020 census map, the 3rd district lost all of its towns in Ocean County, and gained several towns in Burlington County, Mercer County, and Monmouth County.

Counties and municipalities in the district
For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of three counties and 53 municipalities.

Burlington County (38):
 * Bass River, Beverly, Bordentown, Bordentown Township, Burlington, Burlington Township, Chesterfield Township, Cinnaminson Township, Delanco Township, Delran Township, Eastampton Township, Edgewater Park, Evesham Township, Fieldsboro, Florence Township, Hainesport Township, Lumberton, Mansfield Township, Medford Lakes, Medford, Moorestown, Mount Holly Township, Mount Laurel, New Hanover Township, North Hanover Township, Pemberton, Pemberton Township, Riverside Township, Riverton, Shamong Township, Southampton Township, Springfield Township, Tabernacle Township, Washington Township, Westampton, Willingboro Township, Woodland Township, Wrightstown

Mercer County (5):
 * East Windsor, Hamilton, Hightstown, Lawrence, Robbinsville.

Monmouth County (10):
 * Allentown, Englishtown, Freehold Borough, Freehold Township (part; also 4th), Holmdel, Manalapan, Marlboro, Millstone, Roosevelt, Upper Freehold

Recent election results in statewide races

 * Results under current lines (since 2023)


 * Results under old lines

1813–1815: two seats
From 1813 to 1815, two seats were apportioned, elected at-large on a general ticket. This district was organized from New Jersey's At-large congressional district.

District organized to New Jersey's At-large congressional district in 1815