Rancho Cucamonga, California Zip Codes
📍 Rancho Cucamonga is in San Bernardino County, California with 5 zip codes; the most populous is 91730.
Rancho Cucamonga is a USPS city name in San Bernardino County, California with a Census population of approximately 174,790 across its ZIP codes. San Bernardino County as a whole has 121 ZIP codes in this directory. Below you'll find every zip code serving Rancho Cucamonga with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Rancho Cucamonga Zip Codes
| ZIP Code | City | Details |
|---|---|---|
| 91701 | Rancho Cucamonga | View → |
| 91729 | Rancho Cucamonga | View → |
| 91730 | Rancho Cucamonga | View → |
| 91737 | Rancho Cucamonga | View → |
| 91739 | Rancho Cucamonga | View → |
Rancho Cucamonga at a Glance
Rancho Cucamonga has 5 ZIP codes in this directory: 4 standard delivery ZIPs and 1 PO Box or unique ZIP that carries no resident population in Census data. The 4 ZIPs with published Census housing data cover 174,790 residents, the largest being 91730 with 71,040 people.
The median ZIP in Rancho Cucamonga has a household income of $112,301 and a home value of $719,900, a price-to-income ratio of 6.3, below the 6.7 California ZIP median. The highest median income is in 91739 at $138,079. Median rent across these ZIPs is $2,220 a month.
72% of households in the typical Rancho Cucamonga ZIP own their home (statewide ZIP median 64%). 38% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 6.6%, below the 10.8% statewide ZIP median. Overall density is about 2,933 residents per square mile across 60 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Rancho Cucamonga Zip Code Map
Interactive map of Rancho Cucamonga, California zip codes. Click any marker for details.