Boundary Atlas

ZIP code 77009: Houston, TX

ZIP code 77009 is in Houston, in Harris County, Texas. It is in Texas's 7th congressional district (68%), Texas's 29th congressional district (23%) and Texas's 18th congressional district (8.9%). Its state senate districts are State Senate District 6 (81%), State Senate District 15 (18%) and State Senate District 13 (1.3%); its state house district is State House District 145.

36,425residents (2020 Census)
6.2 sq miland area
1cities and towns
3congressional districts
19voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Houston100%

CountyShare of ZIP residents
Harris County100%

Town or county subdivisionShare of ZIP residents
Houston CCD100%

Congressional districts

Congressional districtShare of ZIP residents
Texas's 7th congressional district (TX-07)68%
Texas's 29th congressional district (TX-29)23%
Texas's 18th congressional district (TX-18)8.9%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 681%
State Senate District 1518%
State Senate District 131.3%

State house districtShare of ZIP residents
State House District 145100%
State House District 142land only

Voting precincts

19 voting precincts overlap ZIP 77009. 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:77009")

ZIP 77009 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.