ZIP Code 91737 — Rancho Cucamonga, California

    📍 ZIP code 91737 is in Rancho Cucamonga, San Bernardino County, California.

    ZIP code 91737 is located in Rancho Cucamonga, San Bernardino County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 23,108. The area code for zip code 91737 is 909.

    ZIP
    91737
    City
    Rancho Cucamonga
    County
    San Bernardino County
    State
    California
    Time Zone
    Pacific
    Area Code
    909
    Type
    Standard
    USPS City
    Rancho Cucamonga
    Latitude
    34.1526° N
    Longitude
    117.5777° W
    Land Area
    10.1 sq mi
    Water Area
    0 sq mi

    ZIP Code 91737 Map

    Coordinates: 34.1526°N, 117.5777°W

    ZIP Code 91737 Demographics

    Population

    Total Population23,108
    Density2,288/sq mi
    Median Age43.5
    Male / Female50.3% / 49.7%

    Income & Economy

    Median Household$112,857
    Per Capita$52,950
    Poverty Rate8.4%
    Unemployment7.7%

    Housing

    Total Units8,262
    Owner-Occupied70.8%
    Renter-Occupied29.2%
    Median Home Value$775,700
    Median Rent$2,308

    Education

    High School Grad94.7%
    Bachelor's Degree40.4%

    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).

    Affordability & Profile: ZIP 91737 in Context

    The median home in 91737 is valued at $775,700 against a median household income of $112,857, a price-to-income ratio of 6.9. That is in line with the 6.7 median across the 1,558 California ZIP codes with published housing data, and well past the 3.0 ratio that marks an attainable market nationally, so buying here on a local median income requires substantial savings or a second income. Within San Bernardino County, 91737 ranks 66 of 76 ZIPs on affordability (1 = lowest ratio); the county median ratio is 5.3. Renting takes 24.5% of median household income (median rent $2,308 a month), under the 30% cost-burden threshold.

    91737 ranks 413 of 1,558 statewide on median household income and 522 of 1,558 on median home value; its income is far above the $71,552 San Bernardino County median. 71% of households own their home, above the 64% statewide ZIP median, making this a majority-owner ZIP. 40% of adults hold a bachelor's degree or higher, above the 31% median, and the poverty rate is 8.4%, below the 10.8% statewide ZIP median. Unemployment stands at 7.7%.

    With 2,288 residents per square mile across 10.1 square miles of land, 91737 is far denser than the statewide ZIP median of 1,120 (rank 670 of 1,558). This is a low-density pattern of large lots, small towns or scattered subdivisions.

    Ratios and ranks are computed from the ACS figures above across the 1,558 California ZIP codes with published housing data. See the 2026 California affordability report for the statewide analysis and the methodology for definitions.

    Nearby Zip Codes

    Cities & Places Served

    ZIP code 91737 primarily serves Rancho Cucamonga in San Bernardino County, California.

    Frequently Asked Questions

    People Also Searched For

    Related Resources