ZIP Code 94587: Union City, CA
County: Alameda County
Coordinates: 37.58950, -122.04970
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Get a reliable snapshot of the Union City, CA postal area 94587. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Union City |
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| ZIP Code | 94587 |
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| County | Alameda County |
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| State | CA |
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| Latitude / Longitude | 37.58950, -122.04970 |
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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 94587 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 94587 is commonly represented around 37.58950, -122.04970. These coordinates help identify the general area within Alameda County, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 94587 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 Union City within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 94587?
The primary city for this ZIP code is Union City, located in CA.
In which county is 94587 located?
ZIP code 94587 is situated within Alameda County, CA.
What are the coordinates for 94587?
The approximate center point is 37.58950 (Latitude) and -122.04970 (Longitude).
Is ZIP code 94587 active?
This page lists ZIP 94587 as Listed based on the latest refresh date shown above.
Does ZIP 94587 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