San Ramon, CA ZIP Codes
San Ramon, California has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which San Ramon ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
San Ramon ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: San Ramon city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All San Ramon ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 94582 | street delivery San Ramon Sorting and Delivery Center |
| 94583 | street delivery San Ramon Sorting and Delivery Center |
Why your mail may say San Ramon when you live outside it
San Ramon ZIP codes also cover Norris Canyon, so a letter addressed to San Ramon can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Contra Costa County property records show which city you are in.
San Ramon ZIP code questions
What is the main ZIP code for San Ramon?
94582, the ZIP code of the main San Ramon Sorting and Delivery Center post office at 12935 Alcosta Blvd.
What county is San Ramon in?
Contra Costa County.
ZIP codes for towns near San Ramon
More towns near San Ramon: Union City, San Leandro, Hayward, Concord, Pleasant Hill, Oakland, Antioch, Brentwood, Pittsburg.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections