Boundary Atlas

ZIP code 99004: Cheney, WA

ZIP code 99004 is in Cheney (57% of residents) and Four Lakes (2.0%), in Spokane County (100%) and Whitman County (0.1%), Washington. 41% of its residents live outside city limits. It is in Washington's 5th congressional district. Its state senate districts are Legislative (Senate) District 9 (85%) and Legislative (Senate) District 6 (15%); its state house districts are Legislative (House) District 9 (85%) and Legislative (House) District 6 (15%).

23,064residents (2020 Census)
334.3 sq miland area
2cities and towns
1congressional district
26voting precincts

See it on the mapAll of Washington

City and county

City or townShare of ZIP residents
Cheney57%
Four Lakes2.0%

CountyShare of ZIP residents
Spokane County100%
Whitman County0.1%

Town or county subdivisionShare of ZIP residents
Cheney-Medical Lake CCD78%
Amber-Cheney South CCD12%
Spokane South CCD7.9%
Spokane CCD1.2%
Rock Lake CCD0.1%
Rockford CCD<0.1%

Congressional district

Congressional districtShare of ZIP residents
Washington's 5th congressional district (WA-05)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WA-05)Michael Baumgartner (R)202-225-2006100%
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 9)Mark Schoesler (R)85%
State Senator (Legislative (Senate) District 6)Jeff Holy (R)509-456-274715%
State Representative (Legislative (House) District 9)Joe Schmick (R)85%
State Representative (Legislative (House) District 9)Mary Dye (R)85%
State Representative (Legislative (House) District 6)Jenny Graham (R)15%
State Representative (Legislative (House) District 6)Mike Volz (R)15%

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 ZIP residents
Legislative (Senate) District 985%
Legislative (Senate) District 615%

State house districtShare of ZIP residents
Legislative (House) District 985%
Legislative (House) District 615%

Voting precincts

26 voting precincts overlap ZIP 99004. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:99004")

ZIP 99004 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.