Washington's congressional districts are the ten electoral divisions of the state of Washington that each elect a single member to the United States House of Representatives. The districts are numbered sequentially from 1 to 10 and are redrawn every ten years following the decennial census, in accordance with the principle of equal population (“one person, one vote”).
Current configuration (2023‑present)
Number of districts: 10 (the most recent increase, approved for the 2022 election cycle, reflects Washington’s population growth recorded in the 2020 Census).
Redistricting authority: Washington employs a non‑partisan, citizen‑led Redistricting Commission, composed of five voting members (two Democrats, two Republicans, and one non‑partisan chair) and three non‑voting staff members. The commission’s maps were finalized and approved in November 2021 and took effect for the 2022 congressional elections.
Geographic layout:
- 1st District – Covers the northeastern corner of the state, including Spokane, the Palouse, and parts of the Inland Northwest.
- 2nd District – Extends across central Washington, encompassing Yakima, the Tri‑Cities, and portions of the Columbia River Basin.
- 3rd District – Includes the southwestern area, comprising Vancouver, the Portland metropolitan fringe, and southwestern Washington’s agricultural lands.
- 4th District – Encompasses the central Cascade region, covering the city of Bremerton and portions of the Kitsap Peninsula.
- 5th District – Contains the suburban and exurban areas east of Seattle, including parts of King and Snohomish counties such as Bellevue and Issaquah.
- 6th District – Lies north of Seattle, covering the northern part of King County, the city of Everett, and the Cascade foothills.
- 7th District – Central Seattle and its immediate suburbs, notably parts of King County.
- 8th District – West of Seattle, covering the urban core of Seattle, Capitol Hill, and the northwest part of the city.
- 9th District – Southwest Seattle, the Central Coast, and the southern portions of the Puget Sound region.
- 10th District – Created for the 2022 elections; it stretches across the southern Puget Sound area, including Tacoma, the South Sound suburbs, and portions of western Pierce County.
Historical development
- Admission to the Union (1889): Washington initially received one at‑large congressional seat.
- Growth of representation: The number of districts increased as the state’s population rose, reaching nine districts after the 1990 Census and maintaining that number through the 2010 Census.
- 2020 Census adjustment: The 2020 Census affirmed continued population growth, prompting the addition of a tenth seat. This was the first increase in Washington’s congressional delegation since the 1990 Census.
Representative composition (as of the 118th Congress, 2023‑2025)
The ten districts are represented by a mix of parties, reflecting Washington’s competitive political landscape. The delegation includes both Democratic and Republican members, with the majority currently belonging to the Democratic Party.
Key statutory framework
- U.S. Constitution, Article I, Section 2: Mandates apportionment of House seats based on state populations.
- Washington State Constitution, Article II, § 28: Provides for the establishment of the Redistricting Commission.
- Federal statutes: The Uniform Congressional Districts Act and related federal guidelines govern the timing and criteria for redistricting.
Functions and relevance
Congressional districts determine the constituencies for federal legislative representation, influencing federal policy, allocation of federal funds, and the political balance of the House of Representatives. The composition and boundaries of Washington’s districts are therefore central to the state’s participation in national governance.
