Boundary Atlas

ZIP code 82190: Mammoth, WY

ZIP code 82190 is in Mammoth (67% of residents), in Park County (80%) and Teton County (20%), Wyoming. 33% of its residents live outside city limits. It is in Wyoming's at-large congressional district. Its state senate districts are State Senate District 18 (80%) and State Senate District 17 (20%); its state house districts are State House District 24 (80%) and State House District 23 (20%).

392residents (2020 Census)
2,969.9 sq miland area
1cities and towns
1congressional district
2voting precincts

See it on the mapAll of Wyoming

City and county

City or townShare of ZIP residents
Mammoth67%

CountyShare of ZIP residents
Park County80%
Teton County20%

Town or county subdivisionShare of ZIP residents
Yellowstone National Park CCD80%
Yellowstone National Park CCD20%

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 18)Tim French (R)80%
State Senator (State Senate District 17)Mike Gierau (Democratic)20%
State Representative (State House District 24)Nina Webber (R)307-921-859380%
State Representative (State House District 23)Liz Storer (Democratic)20%

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 1880%
State Senate District 1720%

State house districtShare of ZIP residents
State House District 2480%
State House District 2320%

Voting precincts

2 voting precincts overlap ZIP 82190. Map them, with each precinct's share of the ZIP's residents.

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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:82190")

ZIP 82190 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.