New Jersey's congressional districts

There currently are 12 United States congressional districts in New Jersey based on results from the 2020 census. There were once as many as 15. The fifteenth district was lost after the 1980 census, the fourteenth district was lost after the 1990 census, and the thirteenth district was lost after the 2010 census.

Between the 1998 and 2018 elections, Democrats held between 6 and 8 seats. The 2018 elections brought Democrats to 11 of the 12 seats, which was their highest since the 1912 elections. This left Chris Smith in the 4th district as the only Republican member of New Jersey's congressional delegation for the 116th Congress. It was also the first time since that election that Republicans failed to hold any seat in North Jersey. In the 118th Congress, Democrats hold 9 of the 12 seats.