San Diego County, California Zip Codes
📍 San Diego County has 191 zip codes with a population of 3,323,286.
San Diego County is located in California with a land area of 4,247 square miles. The county seat is San Diego. Below you'll find all 191 zip codes in San Diego County with population, income and home value, the county's affordability profile, and links to its 51 city pages.
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 San Diego County Zip Codes
San Diego County at a Glance
San Diego County has 191 ZIP codes in this directory: 112 standard delivery ZIPs and 79 PO Box or unique ZIPs that carry no resident population in Census data. The 94 ZIPs with published Census housing data cover 3,323,286 residents, the largest being 91911 (Chula Vista) with 87,799 people.
The median ZIP in San Diego County has a household income of $98,033 and a home value of $708,250, a price-to-income ratio of 7.4, above the 6.7 California ZIP median. Affordability ranges from 91962 in Pine Valley at a ratio of 3.6 to 92014 in Del Mar, where the median home is above the $2 million Census ceiling. The highest median income is in 92067 (Rancho Santa Fe) at $245,427. Median rent across these ZIPs is $2,007 a month.
62% of households in the typical San Diego County ZIP own their home (statewide ZIP median 64%). 38% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 9.4%, below the 10.8% statewide ZIP median. Overall density is about 783 residents per square mile across 4,247 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.
San Diego County Zip Code Map
Interactive map of San Diego County, California zip codes.