Castro Valley, CA ZIP codes
Castro Valley, California has 2 ZIP codes. They are in Alameda County.
- Population in these ZIPs
- 59,361
- Avg. median income
- $149,000population-weighted
- Typical home value
- $1,094,300population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
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Castro Valley, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 94546 | Alameda County | 44,855 | $128,385 | $1,006,900 |
| 94552 | Alameda County | 14,506 | $212,605 | $1,364,600 |
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 Castro Valley
- Hayward 5 mi
- San Lorenzo 5 mi
- San Leandro 5 mi
- Moraga 6 mi
- San Ramon 6 mi
- Dublin 8 mi
- Danville 8 mi
- Alamo 9 mi
- Canyon 9 mi
- Union City 9 mi
- Diablo 10 mi
- Pleasanton 11 mi
Frequently asked questions
What county is Castro Valley, California in?
Castro Valley ZIP codes are in Alameda County.