ZIP code 78017: Dilley, TX
ZIP code 78017 is in Dilley (55% of residents) and Hilltop (6.0%), in Frio County (99%) and La Salle County (0.7%), Texas. 39% of its residents live outside city limits. It is in Texas's 23rd congressional district (99%) and Texas's 28th congressional district (0.7%). Its state senate districts are State Senate District 19 (99%) and State Senate District 21 (0.7%); its state house districts are State House District 80 (99%) and State House District 31 (0.7%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Dilley | 55% |
| Hilltop | 6.0% |
| County | Share of ZIP residents |
|---|---|
| Frio County | 99% |
| La Salle County | 0.7% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Dilley CCD | 97% |
| Pearsall CCD | 2.4% |
| Cotulla CCD | 0.7% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 23rd congressional district (TX-23) | 99% |
| Texas's 28th congressional district (TX-28) | 0.7% |
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-28) | Henry Cuellar (D) | 202-225-1640 | 0.7% |
| 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 19) | Roland Gutierrez (Democratic) | 830-278-1234 | 99% |
| State Senator (State Senate District 21) | Judith Zaffirini (Democratic) | 956-722-2293 | 0.7% |
| State Representative (State House District 80) | Don McLaughlin (R) | 99% | |
| State Representative (State House District 31) | Ryan Guillen (R) | 0.7% | |
| U.S. Representative (TX-23) | Vacant |
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
- Dilley laws: search for the Dilley, Texas code of ordinances
- Hilltop laws: search for the Hilltop, Texas code of ordinances
- Frio County website: https://www.co.frio.tx.us/
- Frio County laws: search for the Frio County, Texas code of ordinances
- La Salle County website: https://www.co.la-salle.tx.us/
- La Salle County laws: search for the La Salle County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 99% |
| State Senate District 21 | 0.7% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 80 | 99% |
| State House District 31 | 0.7% |
Voting precincts
7 voting precincts overlap ZIP 78017. 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:78017")
ZIP 78017 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.