Boundary Atlas

ZIP code 79121: Amarillo, TX

ZIP code 79121 is in Amarillo, in Randall County (98%) and Potter County (2.4%), Texas. It is in Texas's 13th congressional district. Its state senate district is State Senate District 31; its state house districts are State House District 86 (98%) and State House District 87 (2.4%).

6,601residents (2020 Census)
1.8 sq miland area
1cities and towns
1congressional district
2voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Amarillo100%

CountyShare of ZIP residents
Randall County98%
Potter County2.4%

Town or county subdivisionShare of ZIP residents
Amarillo CCD98%
Amarillo CCD2.4%

Congressional district

Congressional districtShare of ZIP residents
Texas's 13th congressional district (TX-13)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 31100%

State house districtShare of ZIP residents
State House District 8698%
State House District 872.4%

Voting precincts

2 voting precincts overlap ZIP 79121. 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:79121")

ZIP 79121 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.