Boundary Atlas

ZIP code 82420: Cowley, WY

ZIP code 82420 is in Cowley (84% of residents), in Big Horn County, Wyoming. 16% of its residents live outside city limits. It is in Wyoming's at-large congressional district. Its state senate district is State Senate District 19; its state house district is State House District 26.

912residents (2020 Census)
53.2 sq miland area
1cities and towns
1congressional district
1voting precincts

See it on the mapAll of Wyoming

City and county

City or townShare of ZIP residents
Cowley84%

CountyShare of ZIP residents
Big Horn County100%

Town or county subdivisionShare of ZIP residents
North Big Horn CCD100%

Congressional district

Congressional districtShare of ZIP residents
Wyoming's at-large congressional district (WY-AL)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WY-AL)Harriet M. Hageman (R)202-225-2311100%
U.S. SenatorCynthia M. Lummis (R)202-224-3424 · contact formstatewide
U.S. SenatorJohn Barrasso (R)202-224-6441 · contact formstatewide
State Senator (State Senate District 19)Dan Laursen (R)307-271-0241100%
State Representative (State House District 26)Dalton Banks (R)100%

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
State Senate District 19100%

State house districtShare of ZIP residents
State House District 26100%

Voting precincts

1 voting precinct overlap ZIP 82420. 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:82420")

ZIP 82420 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.