Boundary Atlas

Hawaii: cities, counties, ZIP codes and districts

Hawaii has 2 congressional districts, 25 state senate districts and 51 state house districts under the maps in force for November 3, 2026, plus 247 voting precincts, 5 counties, 163 cities, towns and Census-designated places, and 97 ZIP codes.

Cities and towns

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

Congressional districts (2026)

DistrictShort2020 population
Hawaii's 1st congressional districtHI-01726,395
Hawaii's 2nd congressional districtHI-02728,876

ZIP codes in Hawaii

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 Hawaii. 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="HI")