Boundary Atlas

Mississippi: cities, counties, ZIP codes and districts

Mississippi has 4 congressional districts, 52 state senate districts and 122 state house districts under the maps in force for November 3, 2026, plus 1,817 voting precincts, 82 counties, 427 cities, towns and Census-designated places, and 427 ZIP codes.

Cities and towns

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

Congressional districts (2026)

DistrictShort2020 population
Mississippi's 1st congressional districtMS-01740,319
Mississippi's 2nd congressional districtMS-02740,319
Mississippi's 3rd congressional districtMS-03740,320
Mississippi's 4th congressional districtMS-04740,321

ZIP codes in Mississippi

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 Mississippi. 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="MS")