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
- State
- California
- Country
- United States
- Coordinates
- 32.8282, -116.7543 — precision precise (locality)
View on OpenStreetMap - Population
- 18,300 (ZCTA, ACS 5-year)
- Median household income
- $116,600
- Median age
- 42.5
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 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