El Sobrante, CA ZIP codes
El Sobrante, California has 2 ZIP codes, including 1 PO Box ZIP. They are in Contra Costa County.
- Population in these ZIPs
- 27,659
- Avg. median income
- $118,400population-weighted
- Typical home value
- $726,100population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
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El Sobrante, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 94803 | Contra Costa County | 27,659 | $118,447 | $726,100 |
| 94820 PO Box | Contra Costa County | — | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near El Sobrante
Frequently asked questions
What county is El Sobrante, California in?
El Sobrante ZIP codes are in Contra Costa County.
Which El Sobrante ZIP codes are PO Boxes?
94820 is a PO Box or single-organization ZIP code; it has no residential delivery area.