Fairfield, CA ZIP Codes
Fairfield, California has 3 ZIP codes: 3 for street addresses (, and ).
Your street decides which one you use.
Which Fairfield 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?
Fairfield ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Fairfield city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Fairfield ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 94533 | street delivery Fairfield |
| 94534 | street delivery Fairfield |
| 94535 | street delivery; mail may be addressed to Travis Afb Fairfield |
Why your mail may say Fairfield when you live outside it
Fairfield ZIP codes also cover Green Valley, so a letter addressed to Fairfield can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Solano County property records show which city you are in.
Fairfield ZIP code questions
What is the main ZIP code for Fairfield?
94533, the ZIP code of the main Fairfield post office at 600 Kentucky St.
What county is Fairfield in?
Solano County.
ZIP codes for towns near Fairfield
More towns near Fairfield: Pleasant Hill, Antioch, Walnut Creek, Davis, Oakley, San Pablo, Richmond, Brentwood, Novato.
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