Boundary Atlas

Sammamish, Washington

Sammamish is a city in King County, Washington, with 67,455 residents in 2020. It is in Washington's 8th congressional district. It spans 3 state senate and 3 state house districts.

67,455residents (2020 Census)
20.4 sq miland area
3ZIP codes
1congressional district

County

CountyShare of residents
King County100%

Congressional district

Congressional districtShare of residents
Washington's 8th congressional district (WA-08)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WA-08)Kim Schrier (D)202-225-7761100%
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 41)Lisa Wellman (Democratic)48%
State Senator (Legislative (Senate) District 45)Manka Dhingra (Democratic)30%
State Senator (Legislative (Senate) District 5)Victoria Hunt (Democratic)21%
State Representative (Legislative (House) District 41)Janice Zahn (Democratic)48%
State Representative (Legislative (House) District 41)My-Linh Thai (Democratic)48%
State Representative (Legislative (House) District 45)Larry Springer (Democratic)30%
State Representative (Legislative (House) District 45)Roger Goodman (Democratic)30%
State Representative (Legislative (House) District 5)Lisa Callan (Democratic)21%
State Representative (Legislative (House) District 5)Zach Hall (Democratic)21%

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 4148%
Legislative (Senate) District 4530%
Legislative (Senate) District 521%

State house districtShare of residents
Legislative (House) District 4148%
Legislative (House) District 4530%
Legislative (House) District 521%

ZIP codes

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

Get this in your AI agent

Your agent can get Sammamish'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:5361115")

Sammamish 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.