ZIP code 77872: Madison County, TX
ZIP code 77872 is in Madison County (97%) and Grimes County (3.2%), Texas, outside any city or Census-designated place. It is in Texas's 10th congressional district. Its state senate districts are State Senate District 5 (97%) and State Senate District 18 (3.2%); its state house district is State House District 12.
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Madison County | 97% |
| Grimes County | 3.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| North Zulch CCD | 92% |
| Madisonville CCD | 5.0% |
| Anderson-Bedias CCD | 3.2% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 10th congressional district (TX-10) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (TX-10) | Michael T. McCaul (R) | 202-225-2401 | 100% |
| U.S. Senator | John Cornyn (R) | 202-224-2934 · contact form | statewide |
| U.S. Senator | Ted Cruz (R) | 202-224-5922 · contact form | statewide |
| State Senator (State Senate District 5) | Charles Schwertner (R) | 512-863-8456 | 97% |
| State Senator (State Senate District 18) | Lois Kolkhorst (R) | 361-573-7300 | 3.2% |
| State Representative (State House District 12) | Trey Wharton (R) | 936-649-0510 | 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
- Madison County website: https://www.co.madison.tx.us/
- Madison County laws: search for the Madison County, Texas code of ordinances
- Grimes County website: https://grimescountytexas.gov/
- Grimes County laws: search for the Grimes County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 5 | 97% |
| State Senate District 18 | 3.2% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 12 | 100% |
Voting precincts
3 voting precincts overlap ZIP 77872. 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:77872")
ZIP 77872 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.