ZIP code 78066: Medina County, TX
ZIP code 78066 is in Medina County, Texas, outside any city or Census-designated place. It is in Texas's 23rd congressional district. Its state senate district is State Senate District 24; its state house district is State House District 53.
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Medina County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Castroville-LaCoste CCD | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 23rd congressional district (TX-23) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| 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 24) | Pete Flores (R) | 830-896-9816 | 100% |
| State Representative (State House District 53) | Wes Virdell (R) | 830-730-5925 | 100% |
| U.S. Representative (TX-23) | Vacant |
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
- Medina County website: https://www.medinatx.gov/
- Medina County laws: search for the Medina County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 24 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 53 | 100% |
Voting precincts
2 voting precincts overlap ZIP 78066. 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:78066")
ZIP 78066 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.