Boundary Atlas

ZIP code 79331: Lamesa, TX

ZIP code 79331 is in Lamesa (73% of residents), in Dawson County (99%), Martin County (0.4%), Gaines County (0.1%) and Borden County (<0.1%), Texas. 27% of its residents live outside city limits. It is in Texas's 19th congressional district. Its state senate district is State Senate District 31; its state house districts are State House District 82 (100%), State House District 88 (0.1%) and State House District 83 (<0.1%).

11,825residents (2020 Census)
797.9 sq miland area
2cities and towns
1congressional district
14voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Lamesa73%
Los Ybanez0.2%

CountyShare of ZIP residents
Dawson County99%
Martin County0.4%
Gaines County0.1%
Borden County<0.1%

Town or county subdivisionShare of ZIP residents
Lamesa CCD91%
Lamesa Southeast CCD3.5%
Lamesa Southwest CCD2.8%
Lamesa Northeast CCD1.5%
Lamesa Northwest CCD1.0%
Tarzan-Lenorah CCD0.4%
Seminole CCD0.1%
Gail North CCD<0.1%
Gail South CCD<0.1%
Seagraves CCDland only

Congressional district

Congressional districtShare of ZIP residents
Texas's 19th congressional district (TX-19)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 31100%

State house districtShare of ZIP residents
State House District 82100%
State House District 880.1%
State House District 83<0.1%

Voting precincts

14 voting precincts overlap ZIP 79331. 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:79331")

ZIP 79331 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.