Boundary Atlas

Indiana: cities, counties, ZIP codes and districts

Indiana has 9 congressional districts, 50 state senate districts and 100 state house districts under the maps in force for November 3, 2026, plus 5,121 voting precincts, 92 counties, 974 cities, towns and Census-designated places, and 807 ZIP codes.

Cities and towns

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

Congressional districts (2026)

DistrictShort2020 population
Indiana's 1st congressional districtIN-01753,947
Indiana's 2nd congressional districtIN-02753,947
Indiana's 3rd congressional districtIN-03753,947
Indiana's 4th congressional districtIN-04753,947
Indiana's 5th congressional districtIN-05753,947
Indiana's 6th congressional districtIN-06753,949
Indiana's 7th congressional districtIN-07753,949
Indiana's 8th congressional districtIN-08753,947
Indiana's 9th congressional districtIN-09753,948

ZIP codes in Indiana

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 Indiana. 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="IN")