Boundary Atlas

ZIP code 98237: Skagit County, WA

ZIP code 98237 is in Concrete (19% of residents), in Skagit County (100%) and Whatcom County (0.5%), Washington. 81% of its residents live outside city limits. It is in Washington's 2nd congressional district. Its state senate districts are Legislative (Senate) District 39 (100%) and Legislative (Senate) District 42 (0.5%); its state house districts are Legislative (House) District 39 (100%) and Legislative (House) District 42 (0.5%).

4,304residents (2020 Census)
417.4 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Washington

City and county

City or townShare of ZIP residents
Concrete19%

CountyShare of ZIP residents
Skagit County100%
Whatcom County0.5%

Town or county subdivisionShare of ZIP residents
East Skagit CCD88%
Lyman-Hamilton CCD11%
East Whatcom CCD0.5%
Lake Cavanaugh CCDland only

Congressional district

Congressional districtShare of ZIP residents
Washington's 2nd congressional district (WA-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WA-02)Rick Larsen (D)202-225-2605100%
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 39)Keith Wagoner (R)100%
State Senator (Legislative (Senate) District 42)Sharon Shewmake (Democratic)0.5%
State Representative (Legislative (House) District 39)Carolyn Eslick (R)100%
State Representative (Legislative (House) District 39)Sam Low (R)100%
State Representative (Legislative (House) District 42)Alicia Rule (Democratic)0.5%
State Representative (Legislative (House) District 42)Joe Timmons (Democratic)0.5%

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 39100%
Legislative (Senate) District 420.5%

State house districtShare of ZIP residents
Legislative (House) District 39100%
Legislative (House) District 420.5%

Voting precincts

6 voting precincts overlap ZIP 98237. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:98237")

ZIP 98237 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.