ZIP code 82421: Deaver, WY

ZIP code 82421 is in Deaver (34% of residents), in Big Horn County (77%) and Park County (23%), Wyoming. 66% 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.

447residents (2020 Census)

74.3 sq miland area

1cities and towns

1congressional district

5voting precincts

See it on the map All of Wyoming

City and county

City or town	Share of ZIP residents
Deaver	34%

County	Share of ZIP residents
Big Horn County	77%
Park County	23%

Town or county subdivision	Share of ZIP residents
North Big Horn CCD	77%
Powell CCD	23%

Congressional district

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

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (WY-AL)	Harriet M. Hageman (R)	202-225-2311	100%
U.S. Senator	Cynthia M. Lummis (R)	202-224-3424 · contact form	statewide
U.S. Senator	John Barrasso (R)	202-224-6441 · contact form	statewide
State Senator (State Senate District 19)	Dan Laursen (R)	307-271-0241	100%
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

Deaver laws: search for the Deaver, Wyoming code of ordinances
Big Horn County website: http://www.bighorncountywy.gov
Big Horn County laws: search for the Big Horn County, Wyoming code of ordinances
Park County website: https://parkcounty-wy.gov/
Park County laws: search for the Park County, Wyoming code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 19	100%

State house district	Share of ZIP residents
State House District 26	100%

Voting precincts

5 voting precincts overlap ZIP 82421. 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:82421")

ZIP 82421 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.