Fontana, CA ZIP Codes
Fontana, California has 5 ZIP codes: 3 for street addresses (, and ) and 2 for PO boxes ( and ).
Your street decides which one you use.
Which Fontana 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?
Fontana ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
92331 and 92334 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Fontana city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Fontana ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 92331 | PO boxes at the Southside post office Southside |
| 92334 | PO boxes at the Fontana post office Fontana |
| 92335 | street delivery Fontana |
| 92336 | street delivery Fontana |
| 92337 | street delivery Southside |
ZIP codes from nearby towns that reach into Fontana
- 92316, mailing town Bloomington, covers 2 percent of Fontana
Why your mail may say Fontana when you live outside it
A letter addressed to Fontana can go to a home outside the city limits, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Fontana use 92316, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. San Bernardino County property records show which city you are in.
Fontana ZIP code questions
What is the main ZIP code for Fontana?
92335, the ZIP code of the main Fontana post office at 8282 Sierra Ave.
Which Fontana ZIP codes are for PO boxes only?
92331 and 92334. Mail to them goes to boxes at the post office, not to street addresses.
What county is Fontana in?
San Bernardino County.
ZIP codes for towns near Fontana
More towns near Fontana: Upland, Eastvale, Riverside, Montclair, Claremont, Chino, Highland, Redlands, Pomona.
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