Boundary Atlas

ZIP code 76666: Mertens, TX

ZIP code 76666 is in Mertens (47% of residents), in Hill County (91%) and Navarro County (8.8%), Texas. 53% of its residents live outside city limits. It is in Texas's 17th congressional district (91%) and Texas's 6th congressional district (8.8%). Its state senate districts are State Senate District 22 (91%) and State Senate District 2 (8.8%); its state house districts are State House District 13 (91%) and State House District 8 (8.8%).

305residents (2020 Census)
28.1 sq miland area
1cities and towns
2congressional districts
2voting precincts

See it on the mapAll of Texas

City and county

City or townShare of ZIP residents
Mertens47%

CountyShare of ZIP residents
Hill County91%
Navarro County8.8%

Town or county subdivisionShare of ZIP residents
Hillsboro CCD91%
Blooming Grove CCD8.8%

Congressional districts

Congressional districtShare of ZIP residents
Texas's 17th congressional district (TX-17)91%
Texas's 6th congressional district (TX-06)8.8%

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.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (TX-17)Pete Sessions (R)202-225-610591%
U.S. Representative (TX-06)Jake Ellzey (R)202-225-20028.8%
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 2)Bob Hall (R)972-722-31318.8%
State Representative (State House District 13)Angelia Orr (R)91%
State Representative (State House District 8)Cody Harris (R)903-731-40058.8%

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 2291%
State Senate District 28.8%

State house districtShare of ZIP residents
State House District 1391%
State House District 88.8%

Voting precincts

2 voting precincts overlap ZIP 76666. 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:76666")

ZIP 76666 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.