El Sobrante, California Zip Codes
📍 El Sobrante is in Contra Costa County, California with 2 zip codes; the most populous is 94803.
El Sobrante is a USPS city name in Contra Costa County, California with a Census population of approximately 27,171 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 El Sobrante 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 El Sobrante Zip Codes
El Sobrante at a Glance
El Sobrante 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 27,171 residents, the largest being 94803 with 27,171 people.
The median ZIP in El Sobrante has a household income of $111,610 and a home value of $696,600, a price-to-income ratio of 6.2, below the 6.7 California ZIP median. Median rent across these ZIPs is $2,101 a month.
71% of households in the typical El Sobrante ZIP own their home (statewide ZIP median 64%). 41% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 7.9%, below the 10.8% statewide ZIP median. Overall density is about 2,123 residents per square mile across 13 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.
El Sobrante Zip Code Map
Interactive map of El Sobrante, California zip codes. Click any marker for details.