ZIP code · Alpine · California · United States
ZIP code 91901 — Alpine
ZIP code 91901 serves Alpine, California.
- Postal code
- 91901Single source Value from one source, not cross-checked.
- City
- Alpine
- County
- San Diego FIPS 06073
- State
- California
- Country
- United States
- Coordinates
- 32.8282, -116.7543 — precision precise (locality)
View on OpenStreetMap - Population
- 18,300 (ZCTA, ACS 5-year)
- Population density
- 235 / sq mi
- Land area
- 77.9 sq mi (201.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $116,600
- Per-capita income
- $48,826
- Median age
- 42.5
- Households
- 6,386
- Housing units
- 6,593
- Median home value
- $804,000
- Median gross rent
- $2,064 / month
- Congressional district
- CA-48 (119th Congress)
- USDA hardiness zone
- 9b (25 to 30 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
- Area code
- 530Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 91901 with another ZIP · ZIPs within 25 miles · distance from 91901
Map of ZIP code 91901
Climate — monthly normals
Warmest month Aug (avg high 89°F), coldest Dec (avg low 42°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 64 | 64 | 67 | 71 | 74 | 81 | 87 | 89 | 86 | 78 | 71 | 63 |
| Avg low °F | 43 | 42 | 44 | 47 | 51 | 54 | 60 | 62 | 60 | 54 | 48 | 42 |
| Precip in | 3.2 | 3.6 | 2.7 | 1.2 | 0.6 | 0.1 | 0.1 | 0.1 | 0.3 | 0.6 | 1.5 | 2.0 |
NOAA 1991–2020 climate normals from the nearest station: ALPINE (1.4 mi) · NOAA NCEI
Places in ZIP 91901
- 9 schools
- 1 hospitals & clinics
- 1 doctors & dentists
- 2 supermarkets
- 23 restaurants & cafés
- 1 bars & pubs
- 10 parks
- 7 playgrounds
- 1 gyms & sports centres
- 2 libraries
- 2 post offices
- 15 places of worship
- 2 banks
- 9 gas stations
- 2 EV charging stations
- 7 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