Boundary Atlas

ZIP code 75840: Fairfield, TX

ZIP code 75840 is in Fairfield (41% of residents), in Freestone County, Texas. 59% of its residents live outside city limits. It is in Texas's 17th congressional district. Its state senate district is State Senate District 5; its state house district is State House District 13.

7,029residents (2020 Census)
267.5 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
Fairfield41%

CountyShare of ZIP residents
Freestone County100%

Town or county subdivisionShare of ZIP residents
Fairfield CCD96%
Butler CCD4.1%

Congressional district

Congressional districtShare of ZIP residents
Texas's 17th congressional district (TX-17)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (TX-17)Pete Sessions (R)202-225-6105100%
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 5)Charles Schwertner (R)512-863-8456100%
State Representative (State House District 13)Angelia Orr (R)100%

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 5100%

State house districtShare of ZIP residents
State House District 13100%

Voting precincts

6 voting precincts overlap ZIP 75840. 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:75840")

ZIP 75840 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.