Boundary Atlas

Maine: cities, counties, ZIP codes and districts

Maine has 2 congressional districts, 35 state senate districts and 151 state house districts under the maps in force for November 3, 2026, plus 971 voting precincts, 16 counties, 155 cities, towns and Census-designated places, and 426 ZIP codes.

Cities and towns

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

Congressional districts (2026)

DistrictShort2020 population
Maine's 1st congressional districtME-01681,179
Maine's 2nd congressional districtME-02681,180

ZIP codes in Maine

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 Maine. 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="ME")