ZIP code · San Antonio · Texas · United States
ZIP code 78218 — San Antonio
ZIP code 78218 serves San Antonio, Texas.
- Postal code
- 78218Single source Value from one source, not cross-checked.
- City
- San Antonio
- County
- Bexar
- State
- Texas
- Country
- United States
- Coordinates
- 29.4969, -98.4032 — precision precise (locality)
View on OpenStreetMap - Population
- 38,291 (ZCTA, ACS 5-year)
- Median household income
- $56,833
- Median age
- 37
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page