Boundary Atlas

Tumwater, Washington

Tumwater is a city in Thurston County, Washington, with 25,795 residents in 2020. It is in Washington's 10th congressional district. Its state senate district is Legislative (Senate) District 22; its state house district is Legislative (House) District 22.

25,795residents (2020 Census)
17.7 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Thurston County100%

Congressional district

Congressional districtShare of residents
Washington's 10th congressional district (WA-10)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WA-10)Marilyn Strickland (D)202-225-9740100%
U.S. SenatorMaria Cantwell (D)202-224-3441 · contact formstatewide
U.S. SenatorPatty Murray (D)202-224-2621 · contact formstatewide
State Senator (Legislative (Senate) District 22)Jess Bateman (Democratic)100%
State Representative (Legislative (House) District 22)Beth Doglio (Democratic)100%
State Representative (Legislative (House) District 22)Lisa Parshley (Democratic)100%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of residents
Legislative (Senate) District 22100%

State house districtShare of residents
Legislative (House) District 22100%

ZIP codes

Percentages mark ZIPs only partly in Tumwater: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Tumwater's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:5372905")

Tumwater here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.