ZIP code · San Antonio · Texas · United States
ZIP code 78251 — San Antonio
ZIP code 78251 serves San Antonio, Texas.
- Postal code
- 78251Single source Value from one source, not cross-checked.
- City
- San Antonio
- County
- Bexar FIPS 48029
- State
- Texas
- Country
- United States
- Coordinates
- 29.4597, -98.6555 — precision precise (locality)
View on OpenStreetMap - Population
- 61,683 (ZCTA, ACS 5-year)
- Population density
- 4,116 / sq mi
- Land area
- 15 sq mi (38.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $78,025
- Per-capita income
- $35,747
- Median age
- 32.2
- Households
- 21,963
- Housing units
- 22,945
- Median home value
- $243,900
- Median gross rent
- $1,371 / month
- Congressional districts
- TX-20 (also TX-23) (119th Congress)
- USDA hardiness zone
- 9a (20 to 25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 78251 with another ZIP · ZIPs within 25 miles · distance from 78251
Map of ZIP code 78251
Climate — monthly normals
Warmest month Aug (avg high 99°F), coldest Jan (avg low 43°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 65 | 70 | 76 | 83 | 89 | 95 | 97 | 99 | 93 | 85 | 74 | 66 |
| Avg low °F | 43 | 46 | 53 | 60 | 67 | 73 | 74 | 74 | 70 | 62 | 51 | 44 |
| Precip in | 2.0 | 1.8 | 2.3 | 2.4 | 4.0 | 3.4 | 2.4 | 2.5 | 3.1 | 3.8 | 1.9 | 1.9 |
NOAA 1991–2020 climate normals from the nearest station: SAN ANTONIO/SEAWORLD (2.9 mi) · NOAA NCEI
Places in ZIP 78251
- 18 schools
- 1 colleges & universities
- 19 hospitals & clinics
- 9 doctors & dentists
- 4 pharmacies
- 3 supermarkets
- 82 restaurants & cafés
- 5 bars & pubs
- 7 parks
- 7 playgrounds
- 6 gyms & sports centres
- 14 places of worship
- 11 banks
- 21 gas stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page