Zip Code 78221 — San Antonio, TX
78221 is a ZIP Code associated with San Antonio, TX, located within Bexar. The postal region supports an estimated population of 42,178 residents across Data Pending housing units, with a population density of 448.5 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (29.280970, -98.475290)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78221 |
| Primary City | San Antonio |
| State / Province | TX |
| County | Bexar |
| Total Population | 42,178 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 448.5 people/sq mi |
| Timezone | America/Chicago |
How 78221 Compares
| Metric | ZIP 78221 | Bexar County | TX State Average |
|---|
| Population | 42,178 | 2,079,418 | 30,188,035 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 448.5 /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 →