ZIP Code 94583: San Ramon, CA
County: Contra Costa County
Coordinates: 37.75620, -121.95220
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Get a reliable snapshot of the San Ramon, CA postal area 94583. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | San Ramon |
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| ZIP Code | 94583 |
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| County | Contra Costa County |
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| State | CA |
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| Latitude / Longitude | 37.75620, -121.95220 |
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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 94583 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 94583 are listed as 37.75620 / -121.95220, useful for GPS and service checks in and around San Ramon, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 94583 for mail delivery and general location reference in
Contra Costa County,
CA.
This ZIP may extend beyond the city core into nearby communities within Contra Costa County.
Related ZIP Codes (Nearby)
Explore other postal codes near San Ramon within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 94583?
The primary city for this ZIP code is San Ramon, located in CA.
In which county is 94583 located?
ZIP code 94583 is situated within Contra Costa County, CA.
What are the coordinates for 94583?
The approximate center point is 37.75620 (Latitude) and -121.95220 (Longitude).
Is ZIP code 94583 active?
This page lists ZIP 94583 as Listed based on the latest refresh date shown above.
Does ZIP 94583 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