Boundary Atlas

ZIP code 99022: Medical Lake, WA

ZIP code 99022 is in Medical Lake (55% of residents), in Spokane County, Washington. 45% of its residents live outside city limits. It is in Washington's 5th congressional district. Its state senate districts are Legislative (Senate) District 6 (87%) and Legislative (Senate) District 9 (13%); its state house districts are Legislative (House) District 6 (87%) and Legislative (House) District 9 (13%).

8,867residents (2020 Census)
68.3 sq miland area
1cities and towns
1congressional district
12voting precincts

See it on the mapAll of Washington

City and county

City or townShare of ZIP residents
Medical Lake55%

CountyShare of ZIP residents
Spokane County100%

Town or county subdivisionShare of ZIP residents
Cheney-Medical Lake CCD75%
Airway Heights CCD25%

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 6)Jeff Holy (R)509-456-274787%
State Senator (Legislative (Senate) District 9)Mark Schoesler (R)13%
State Representative (Legislative (House) District 6)Jenny Graham (R)87%
State Representative (Legislative (House) District 6)Mike Volz (R)87%
State Representative (Legislative (House) District 9)Joe Schmick (R)13%
State Representative (Legislative (House) District 9)Mary Dye (R)13%

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 687%
Legislative (Senate) District 913%

State house districtShare of ZIP residents
Legislative (House) District 687%
Legislative (House) District 913%

Voting precincts

12 voting precincts overlap ZIP 99022. 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:99022")

ZIP 99022 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.