Boundary Atlas

ZIP code 77085: Houston, TX

ZIP code 77085 is in Houston, in Harris County (96%) and Fort Bend County (4.5%), Texas. It is in Texas's 18th congressional district. Its state senate district is State Senate District 13; its state house districts are State House District 131 (95%), State House District 27 (4.5%) and State House District 146 (0.1%).

17,785residents (2020 Census)
5.5 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Houston100%

CountyShare of ZIP residents
Harris County96%
Fort Bend County4.5%

Town or county subdivisionShare of ZIP residents
Houston CCD96%
Stafford-Missouri City CCD4.5%

Congressional district

Congressional districtShare of ZIP residents
Texas's 18th congressional district (TX-18)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 13100%

State house districtShare of ZIP residents
State House District 13195%
State House District 274.5%
State House District 1460.1%

Voting precincts

6 voting precincts overlap ZIP 77085. 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:77085")

ZIP 77085 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.