Boundary Atlas

Arizona: cities, counties, ZIP codes and districts

Arizona has 9 congressional districts, 30 state senate districts and 30 state house districts under the maps in force for November 3, 2026, plus 1,749 voting precincts, 15 counties, 467 cities, towns and Census-designated places, and 417 ZIP codes.

Cities and towns

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

Congressional districts (2026)

DistrictShort2020 population
Arizona's 1st congressional districtAZ-01794,611
Arizona's 2nd congressional districtAZ-02794,612
Arizona's 3rd congressional districtAZ-03794,612
Arizona's 4th congressional districtAZ-04794,611
Arizona's 5th congressional districtAZ-05794,612
Arizona's 6th congressional districtAZ-06794,611
Arizona's 7th congressional districtAZ-07794,611
Arizona's 8th congressional districtAZ-08794,610
Arizona's 9th congressional districtAZ-09794,612

ZIP codes in Arizona

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 Arizona. 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="AZ")