Zip Code 78384 — San Diego, TX
78384 is a ZIP Code associated with San Diego, TX, located within Duval. The postal region supports an estimated population of 5,747 residents across Data Pending housing units, with a population density of 3.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (27.730680, -98.470700)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78384 |
| Primary City | San Diego |
| State / Province | TX |
| County | Duval |
| Total Population | 5,747 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 3.8 people/sq mi |
| Timezone | America/Chicago |
How 78384 Compares
| Metric | ZIP 78384 | Duval County | TX State Average |
|---|
| Population | 5,747 | 10,464 | 30,188,035 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 3.8 /sq mi | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →