Home > CA > San Bernardino County > Rancho Cucamonga > Zip 91730

Zip Code 91730 — Rancho Cucamonga, CA

91730 is a ZIP Code associated with Rancho Cucamonga, CA, located within San Bernardino. The postal region supports an estimated population of 71,613 residents across Data Pending housing units, with a population density of 2,013.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (34.100230, -117.581100)

Data MetricLocal Statistic
Postal / Zip Code91730
Primary CityRancho Cucamonga
State / ProvinceCA
CountySan Bernardino
Total Population71,613
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2,013.9 people/sq mi
TimezoneAmerica/Los_Angeles

How 91730 Compares

MetricZIP 91730San Bernardino CountyCA State Average
Population71,6132,188,91239,286,245
Median IncomeData PendingN/AN/A
Population Density2,013.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 91764Ontario2.1 mi56,270N/A
Zip 91701Rancho Cucamonga2.8 mi39,287N/A
Zip 91737Rancho Cucamonga3.8 mi22,958N/A
Zip 91761Ontario4.5 mi62,935N/A
Zip 91786Upland4.6 mi55,829N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →