Rancho Cucamonga, CA ZIP Codes
Rancho Cucamonga, California has 5 ZIP codes: 4 for street addresses (, , and ) and 1 for PO boxes ().
Your street decides which one you use.
Which Rancho Cucamonga 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?
Rancho Cucamonga ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
91729 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Rancho Cucamonga city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Rancho Cucamonga ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 91701 | street delivery Rancho Cucamonga |
| 91729 | PO boxes at the Rancho Cucamonga post office Rancho Cucamonga |
| 91730 | street delivery Rancho Cucamonga |
| 91737 | street delivery Rancho Cucamonga |
| 91739 | street delivery Rancho Cucamonga |
Rancho Cucamonga ZIP code questions
What is the main ZIP code for Rancho Cucamonga?
91701, the ZIP code of the main Rancho Cucamonga post office at 10950 Arrow Rte.
Which Rancho Cucamonga ZIP codes are for PO boxes only?
91729. Mail to it goes to boxes at the post office, not to street addresses.
What county is Rancho Cucamonga in?
San Bernardino County.
ZIP codes for towns near Rancho Cucamonga
More towns near Rancho Cucamonga: Jurupa Valley, Eastvale, La Verne, Pomona, Chino, San Dimas, Colton, San Bernardino, Chino Hills.
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