Home > CA > Contra Costa County > El Sobrante > Zip 94803

Zip Code 94803 — El Sobrante, CA

ZIP Code 94803 is associated with El Sobrante, CA, in Contra Costa County. The listed population estimate is 27,659; estimated density is 833.1 people per square mile. Among records with population estimates, it ranks #17 of 43 in Contra Costa County and #656 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.956830, -122.282350)

Data MetricLocal Statistic
Postal / Zip Code94803
Primary CityEl Sobrante
State / ProvinceCA
CountyContra Costa
Total Population27,659
Population Density833.1 people/sq mi
TimezoneAmerica/Los_Angeles

How 94803 Compares

MetricZIP 94803Contra Costa County recordsCA records
Population estimate27,6591,171,369 (sum)39,286,245 (sum)
Population Density833.1 /sq mi----
County population rank#17 of 43----
State population rank#656 of 1,762----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CA

ZIP CodeCityDistancePopulation estimate
ZIP 94564Pinole2.3 mi18,761
ZIP 94805Richmond2.5 mi14,670
ZIP 94530El Cerrito2.7 mi26,401
ZIP 94806San Pablo3.3 mi62,546
ZIP 94547Hercules3.6 mi26,302

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →