Boundary Atlas

ZIP code 78040: Laredo, TX

ZIP code 78040 is in Laredo, in Webb County, Texas. It is in Texas's 28th congressional district. Its state senate district is State Senate District 21; its state house districts are State House District 42 (88%) and State House District 80 (12%).

36,688residents (2020 Census)
6.3 sq miland area
1cities and towns
1congressional district
18voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Laredo100%

CountyShare of ZIP residents
Webb County100%

Town or county subdivisionShare of ZIP residents
Laredo CCD100%

Congressional district

Congressional districtShare of ZIP residents
Texas's 28th congressional district (TX-28)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 21100%

State house districtShare of ZIP residents
State House District 4288%
State House District 8012%

Voting precincts

18 voting precincts overlap ZIP 78040. 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:78040")

ZIP 78040 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.