Boundary Atlas

ZIP code 77486: West Columbia, TX

ZIP code 77486 is in West Columbia (49% of residents) and East Columbia (1.7%), in Brazoria County, Texas. 50% of its residents live outside city limits. It is in Texas's 22nd congressional district. Its state senate district is State Senate District 17; its state house district is State House District 25.

7,488residents (2020 Census)
48.2 sq miland area
3cities and towns
1congressional district
6voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
West Columbia49%
East Columbia1.7%
Wild Peach Village0.6%

CountyShare of ZIP residents
Brazoria County100%

Town or county subdivisionShare of ZIP residents
Brazoria-West Columbia CCD99%
Angleton CCD1.1%

Congressional district

Congressional districtShare of ZIP residents
Texas's 22nd congressional district (TX-22)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 17100%

State house districtShare of ZIP residents
State House District 25100%

Voting precincts

6 voting precincts overlap ZIP 77486. 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:77486")

ZIP 77486 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.