Boundary Atlas

ZIP code 78751: Austin, TX

ZIP code 78751 is in Austin, in Travis County, Texas. It is in Texas's 37th congressional district. Its state senate district is State Senate District 14; its state house districts are State House District 49 (92%) and State House District 50 (8.2%).

17,071residents (2020 Census)
2.4 sq miland area
1cities and towns
1congressional district
7voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Austin100%

CountyShare of ZIP residents
Travis County100%

Town or county subdivisionShare of ZIP residents
Austin CCD100%

Congressional district

Congressional districtShare of ZIP residents
Texas's 37th congressional district (TX-37)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 14100%

State house districtShare of ZIP residents
State House District 4992%
State House District 508.2%

Voting precincts

7 voting precincts overlap ZIP 78751. 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:78751")

ZIP 78751 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.