Census place · GEOID 0659451 · San Bernardino County
Rancho Cucamonga, CA ZIP codes
7 ZIP/ZCTAs intersecting this Census place in San Bernardino County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Rancho Cucamonga (GEOID 0659451). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 305,813 (7 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Rancho Cucamonga, CA

ZIP/ZCTA overlap with Rancho Cucamonga
Population overlap
Share of each ZIP/ZCTA’s population located within Rancho Cucamonga, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- 91701100.0%
USPS primary city
- 91730100.0%
USPS primary city
- 9173799.8%
USPS primary city
- 9173999.7%
USPS primary city
- 917840.0%
- 923360.0%
- 923580.0%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Rancho Cucamonga
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 91701 | Rancho Cucamonga | San Bernardino County | 38,597 | $113,576 |
| 91730 | Rancho Cucamonga | San Bernardino County | 71,692 | $89,654 |
| 91737 | Rancho Cucamonga | San Bernardino County | 22,797 | $116,903 |
| 91739 | Rancho Cucamonga | San Bernardino County | 41,722 | $141,475 |
| 91784 | Upland | San Bernardino County | 26,900 | $157,118 |
| 92336 | Fontana | San Bernardino County | 103,393 | $121,989 |
| 92358 | Lytle Creek | San Bernardino County | 712 | $92,772 |
USPS associates these ZIPs with Rancho Cucamonga
These codes list Rancho Cucamonga as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 91729 | Rancho Cucamonga | San Bernardino County | 2,782 | — |