ZIP code · Castro Valley · California · United States

ZIP code 94552 — Castro Valley

Name: Castro Valley (94552)
Address: California, 94552, US

ZIP code 94552 serves Castro Valley, California.

Postal code: 94552
Single source Value from one source, not cross-checked.
City: Castro Valley
County: Alameda
State: California
Country: United States
Coordinates: 37.7131, -122.0381 — precision precise (locality)
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Nearby localities

94546Castro Valley

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page