ZIP code 77363: Grimes County, TX
ZIP code 77363 is in Pinebrook (13% of residents), Plantersville (12%) and Todd Mission (3.2%), in Grimes County (93%) and Waller County (6.8%), Texas. 72% of its residents live outside city limits. It is in Texas's 10th congressional district (93%) and Texas's 8th congressional district (6.8%). Its state senate district is State Senate District 18; its state house districts are State House District 12 (93%) and State House District 85 (6.8%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Pinebrook | 13% |
| Plantersville | 12% |
| Todd Mission | 3.2% |
| County | Share of ZIP residents |
|---|---|
| Grimes County | 93% |
| Waller County | 6.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Navasota CCD | 93% |
| Prairie View-Waller CCD | 6.8% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 10th congressional district (TX-10) | 93% |
| Texas's 8th congressional district (TX-08) | 6.8% |
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
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (TX-10) | Michael T. McCaul (R) | 202-225-2401 | 93% |
| U.S. Representative (TX-08) | Morgan Luttrell (R) | 202-225-4901 | 6.8% |
| 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 18) | Lois Kolkhorst (R) | 361-573-7300 | 100% |
| State Representative (State House District 12) | Trey Wharton (R) | 936-649-0510 | 93% |
| State Representative (State House District 85) | Stan Kitzman (R) | 979-865-4560 | 6.8% |
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
- Pinebrook laws: search for the Pinebrook, Texas code of ordinances
- Plantersville laws: search for the Plantersville, Texas code of ordinances
- Todd Mission website: https://toddmissiontx.gov
- Todd Mission laws: search for the Todd Mission, Texas code of ordinances
- Grimes County website: https://grimescountytexas.gov/
- Grimes County laws: search for the Grimes County, Texas code of ordinances
- Waller County website: https://www.co.waller.tx.us/
- Waller County laws: search for the Waller County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 18 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 12 | 93% |
| State House District 85 | 6.8% |
Voting precincts
5 voting precincts overlap ZIP 77363. 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:77363")
ZIP 77363 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.