94820 ZIP Code — El Sobrante, CA
Contra Costa County, California
ZIP code 94820 is located in El Sobrante, California, within Contra Costa County. It covers approximately 0.00 square miles and serves a population of 0 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 341/510.
0
population
0.00
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
94820 ZIP code map
Cities in ZIP code 94820
Below are the cities the US Postal Service accepts for ZIP code 94820. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| El Sobrante | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 0 |
| Population density | 0 / sq mi |
| State FIPS | 06 |
| County FIPS | 013 |
| Geography | |
|---|---|
| Land area | 0.00 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 37.9772 |
| Longitude | -122.2943 |
| Timezone | Pacific (PT) |
| Area code | 341/510 |