Boundary Atlas

ZIP code 77642: Port Arthur, TX

ZIP code 77642 is in Port Arthur, in Jefferson County, Texas. It is in Texas's 14th congressional district. Its state senate districts are State Senate District 4 (60%) and State Senate District 3 (40%); its state house district is State House District 22.

39,017residents (2020 Census)
19.7 sq miland area
1cities and towns
1congressional district
18voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Port Arthur100%

CountyShare of ZIP residents
Jefferson County100%

Town or county subdivisionShare of ZIP residents
Port Arthur CCD100%

Congressional district

Congressional districtShare of ZIP residents
Texas's 14th congressional district (TX-14)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (TX-14)Randy K. Weber, Sr. (R)202-225-2831100%
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 4)Brett Ligon (R)60%
State Senator (State Senate District 3)Robert Nichols (R)409-755-989340%
State Representative (State House District 22)Christian Manuel (Democratic)409-344-4022100%

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 460%
State Senate District 340%

State house districtShare of ZIP residents
State House District 22100%

Voting precincts

18 voting precincts overlap ZIP 77642. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:77642")

ZIP 77642 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.