Boundary Atlas

Sumner, Washington

Sumner is a city in Pierce County, Washington, with 10,627 residents in 2020. It is in Washington's 10th congressional district. It spans 2 state senate and 2 state house districts.

10,627residents (2020 Census)
7.6 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Pierce 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 31)Phil Fortunato (R)100%
State Senator (Legislative (Senate) District 25)Chris Gildon (R)<0.1%
State Representative (Legislative (House) District 31)Drew Stokesbary (R)100%
State Representative (Legislative (House) District 31)Josh Penner (R)100%
State Representative (Legislative (House) District 25)Cyndy Jacobsen (R)<0.1%
State Representative (Legislative (House) District 25)Michael Keaton (R)<0.1%

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 31100%
Legislative (Senate) District 25<0.1%

State house districtShare of residents
Legislative (House) District 31100%
Legislative (House) District 25<0.1%

ZIP codes

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

Get this in your AI agent

Your agent can get Sumner'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:5368435")

Sumner 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.