How many congressional districts does Washington have?

Washington: cities, counties, ZIP codes and districts

Washington has 10 congressional districts, 49 state senate districts and 49 state house districts under the maps in force for November 3, 2026, plus 8,119 voting precincts, 39 counties, 639 cities, towns and Census-designated places, and 605 ZIP codes.

Cities and towns

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

Congressional districts (2026)

District	Short	2020 population
Washington's 1st congressional district	WA-01	772,031
Washington's 2nd congressional district	WA-02	769,105
Washington's 3rd congressional district	WA-03	769,308
Washington's 4th congressional district	WA-04	768,710
Washington's 5th congressional district	WA-05	774,871
Washington's 6th congressional district	WA-06	773,278
Washington's 7th congressional district	WA-07	769,663
Washington's 8th congressional district	WA-08	769,847
Washington's 9th congressional district	WA-09	768,838
Washington's 10th congressional district	WA-10	769,630

ZIP codes in Washington

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 Washington. 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="WA")