Boundary Atlas

ZIP code 77003: Houston, TX

ZIP code 77003 is in Houston, in Harris County, Texas. It is in Texas's 18th congressional district. Its state senate districts are State Senate District 6 (92%) and State Senate District 13 (8.5%); its state house districts are State House District 145 (53%), State House District 147 (27%), State House District 143 (17%) and State House District 142 (3.0%).

11,874residents (2020 Census)
2.7 sq miland area
1cities and towns
1congressional district
10voting 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 district

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

Elected officials

OfficeMemberContactShare of residents
MayorJohn Whitmire713-837-0311100%
U.S. Representative (TX-18)Christian D. Menefee (D)202-225-3816100%
U.S. SenatorJohn Cornyn (R)202-224-2934 · contact formstatewide
U.S. SenatorTed Cruz (R)202-224-5922 · contact formstatewide
State Senator (State Senate District 6)Carol Alvarado (Democratic)713-926-625792%
State Senator (State Senate District 13)Borris Miles (Democratic)713-665-83228.5%
State Representative (State House District 145)Christina Morales (Democratic)713-718-591553%
State Representative (State House District 147)Jo Jones (Democratic)713-522-055527%
State Representative (State House District 143)Ana Hernandez (Democratic)713-675-859617%
State Representative (State House District 142)Harold Dutton (Democratic)713-692-91923.0%

Elected in 2024 under TX's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 692%
State Senate District 138.5%

State house districtShare of ZIP residents
State House District 14553%
State House District 14727%
State House District 14317%
State House District 1423.0%

Voting precincts

10 voting precincts overlap ZIP 77003. 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:77003")

ZIP 77003 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.