Alpine, California Zip Codes
📍 Alpine is in San Diego County, California with 2 zip codes; the most populous is 91901.
Alpine is a USPS city name in San Diego County, California with a Census population of approximately 18,669 across its ZIP codes. San Diego County as a whole has 191 ZIP codes in this directory. Below you'll find every zip code serving Alpine with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Alpine Zip Codes
Alpine at a Glance
Alpine has 2 ZIP codes in this directory: 1 standard delivery ZIP and 1 PO Box or unique ZIP that carries no resident population in Census data. The 1 ZIP with published Census housing data cover 18,669 residents, the largest being 91901 with 18,669 people.
The median ZIP in Alpine has a household income of $110,013 and a home value of $740,000, a price-to-income ratio of 6.7, in line with the 6.7 California ZIP median. Median rent across these ZIPs is $1,963 a month.
73% of households in the typical Alpine ZIP own their home (statewide ZIP median 64%). 30% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 8.8%, below the 10.8% statewide ZIP median. Overall density is about 240 residents per square mile across 78 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Alpine Zip Code Map
Interactive map of Alpine, California zip codes. Click any marker for details.