ZIP Code 94552: Castro Valley, CA
County: Alameda County
Coordinates: 37.71310, -122.03810
ZIP Type: Standard
Time Zone: Pacific Time (PT)
This profile provides an in-depth look at ZIP code 94552, serving Castro Valley in CA. It lies in Alameda County and supports delivery, planning, and address verification.
| Primary City | Castro Valley |
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| ZIP Code | 94552 |
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| County | Alameda County |
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| State | CA |
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| Latitude / Longitude | 37.71310, -122.03810 |
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| ZIP Type | Standard |
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| Time Zone | Pacific Time (PT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 94552 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 94552 is approximately 37.71310 (latitude) and -122.03810 (longitude). This location sits within Alameda County, contributing to regional planning across CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 94552 for mail delivery and general location reference in
Alameda County,
CA.
This ZIP may extend beyond the city core into nearby communities within Alameda County.
Related ZIP Codes (Nearby)
Explore other postal codes near Castro Valley within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 94552?
The primary city for this ZIP code is Castro Valley, located in CA.
In which county is 94552 located?
ZIP code 94552 is situated within Alameda County, CA.
What are the coordinates for 94552?
The approximate center point is 37.71310 (Latitude) and -122.03810 (Longitude).
Is ZIP code 94552 active?
This page lists ZIP 94552 as Listed based on the latest refresh date shown above.
Does ZIP 94552 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08