Boundary Atlas

ZIP code 78594: Sebastian, TX

ZIP code 78594 is in Sebastian (94% of residents) and Zapata Ranch (1.2%), in Willacy County, Texas. 5.1% of its residents live outside city limits. It is in Texas's 34th congressional district. Its state senate district is State Senate District 27; its state house district is State House District 37.

1,796residents (2020 Census)
3.2 sq miland area
2cities and towns
1congressional district
1voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Sebastian94%
Zapata Ranch1.2%

CountyShare of ZIP residents
Willacy County100%

Town or county subdivisionShare of ZIP residents
Sebastian CCD100%

Congressional district

Congressional districtShare of ZIP residents
Texas's 34th congressional district (TX-34)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (TX-34)Vicente Gonzalez (D)202-225-2531100%
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 27)Adam Hinojosa (R)956-542-2211100%
State Representative (State House District 37)Janie Lopez (R)956-247-3610100%

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: 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 27100%

State house districtShare of ZIP residents
State House District 37100%

Voting precincts

1 voting precinct overlap ZIP 78594. Map them, with each precinct's share of the ZIP's residents.

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ZIP 78594 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.