San Ramon, California Zip Codes
📍 San Ramon is in Contra Costa County, California with 2 zip codes; the most populous is 94582.
San Ramon is a USPS city name in Contra Costa County, California with a Census population of approximately 87,096 across its ZIP codes. Contra Costa County as a whole has 53 ZIP codes in this directory. Below you'll find every zip code serving San Ramon 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 San Ramon Zip Codes
San Ramon at a Glance
San Ramon has 2 ZIP codes in this directory: 2 standard delivery ZIPs. The 2 ZIPs with published Census housing data cover 87,096 residents, the largest being 94582 with 47,338 people.
The median ZIP in San Ramon has a household income of $190,494 and a home value of $1,282,500, a price-to-income ratio of 6.7, in line with the 6.7 California ZIP median. Affordability ranges from 94583 at a ratio of 6.6 to 94582, where the median home is $1,385,200. The highest median income is in 94582 at $202,775. Median rent across these ZIPs is $2,773 a month.
71% of households in the typical San Ramon ZIP own their home (statewide ZIP median 64%). 70% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 4.2%, far below the 10.8% statewide ZIP median. Overall density is about 2,517 residents per square mile across 35 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 Ramon Zip Code Map
Interactive map of San Ramon, California zip codes. Click any marker for details.