Rialto, CA ZIP Codes
Rialto, California has 3 ZIP codes: 3 for street addresses (, and ).
Your street decides which one you use.
Which Rialto 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?
Rialto ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Rialto city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Rialto ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 92316 | street delivery; mail may be addressed to Bloomington Bloomington |
| 92376 | street delivery Rialto Annex |
| 92377 | street delivery Rialto |
ZIP codes from nearby towns that reach into Rialto
- 92407, mailing town San Bernardino, covers 5 percent of Rialto
Why your mail may say Rialto when you live outside it
Rialto ZIP codes also cover Bloomington, so a letter addressed to Rialto can go to a home outside the city limits.
The reverse happens too: parts of Rialto use 92407, 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.
Rialto ZIP code questions
What is the main ZIP code for Rialto?
92377, the ZIP code of the main Rialto post office at 241 W Rialto Ave.
What county is Rialto in?
San Bernardino County.
ZIP codes for towns near Rialto
More towns near Rialto: Highland, Redlands, Ontario, Eastvale, Upland, Moreno Valley, Montclair, Claremont, Chino.
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