Boundary Atlas

New Jersey: cities, counties, ZIP codes and districts

New Jersey has 12 congressional districts, 40 state senate districts and 40 state house districts under the maps in force for November 3, 2026, plus 6,421 voting precincts, 21 counties, 700 cities, towns and Census-designated places, and 598 ZIP codes.

Cities and towns

Largest first. Each page lists the city's county, districts and ZIP codes.

Congressional districts (2026)

DistrictShort2020 population
New Jersey's 1st congressional districtNJ-01771,744
New Jersey's 2nd congressional districtNJ-02779,056
New Jersey's 3rd congressional districtNJ-03778,024
New Jersey's 4th congressional districtNJ-04772,969
New Jersey's 5th congressional districtNJ-05773,218
New Jersey's 6th congressional districtNJ-06773,768
New Jersey's 7th congressional districtNJ-07774,294
New Jersey's 8th congressional districtNJ-08772,366
New Jersey's 9th congressional districtNJ-09772,060
New Jersey's 10th congressional districtNJ-10773,536
New Jersey's 11th congressional districtNJ-11773,263
New Jersey's 12th congressional districtNJ-12774,696

ZIP codes in New Jersey

Each page lists the ZIP's congressional and legislative districts, with population shares where it's split.

Get this in your AI agent

Your agent can list, look up and map every district and precinct in New Jersey. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

list_geographies(country="US", level="congressional_district", region="NJ")