ZIP code 78384: San Diego, TX
ZIP code 78384 is in San Diego (66% of residents), in Duval County (85%) and Jim Wells County (15%), Texas. 34% of its residents live outside city limits. It is in Texas's 28th congressional district (85%) and Texas's 15th congressional district (15%). Its state senate districts are State Senate District 21 (85%) and State Senate District 20 (15%); its state house districts are State House District 31 (85%) and State House District 43 (15%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| San Diego | 66% |
| County | Share of ZIP residents |
|---|---|
| Duval County | 85% |
| Jim Wells County | 15% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| San Diego CCD | 82% |
| Alice CCD | 15% |
| Freer CCD | 1.2% |
| Benavides CCD | 1.2% |
| Realitos-Concepcion CCD | 0.5% |
| Orange Grove-Sandia CCD | 0.4% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 28th congressional district (TX-28) | 85% |
| Texas's 15th congressional district (TX-15) | 15% |
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 | 85% |
| U.S. Representative (TX-15) | Monica De La Cruz (R) | 202-225-9901 | 15% |
| 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 21) | Judith Zaffirini (Democratic) | 956-722-2293 | 85% |
| State Senator (State Senate District 20) | Chuy Hinojosa (Democratic) | 361-882-0900 | 15% |
| State Representative (State House District 31) | Ryan Guillen (R) | 85% | |
| State Representative (State House District 43) | J.M. Lozano (R) | 15% |
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
- San Diego laws: search for the San Diego, Texas code of ordinances
- Duval County website: https://www.co.duval.tx.us/
- Duval County laws: search for the Duval County, Texas code of ordinances
- Jim Wells County website: https://www.co.jim-wells.tx.us/
- Jim Wells County laws: search for the Jim Wells County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 21 | 85% |
| State Senate District 20 | 15% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 31 | 85% |
| State House District 43 | 15% |
Voting precincts
8 voting precincts overlap ZIP 78384. 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:78384")
ZIP 78384 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.