ZIP Code 91773 — San Dimas, California

    📍 ZIP code 91773 is in San Dimas, Los Angeles County, California.

    ZIP code 91773 is located in San Dimas, Los Angeles County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 34,066. The area code for zip code 91773 is 626.

    ZIP
    91773
    City
    San Dimas
    County
    Los Angeles County
    State
    California
    Time Zone
    Pacific
    Area Code
    626
    Type
    Standard
    USPS City
    San Dimas
    Latitude
    34.1102° N
    Longitude
    117.8104° W
    Land Area
    15 sq mi
    Water Area
    0.4 sq mi

    ZIP Code 91773 Map

    Coordinates: 34.1102°N, 117.8104°W

    ZIP Code 91773 Demographics

    Population

    Total Population34,066
    Density2,271/sq mi
    Median Age42.7
    Male / Female47.9% / 52.1%

    Income & Economy

    Median Household$101,466
    Per Capita$46,643
    Poverty Rate9.4%
    Unemployment5.3%

    Housing

    Total Units12,319
    Owner-Occupied70.6%
    Renter-Occupied29.4%
    Median Home Value$714,400
    Median Rent$2,202

    Education

    High School Grad93.7%
    Bachelor's Degree38.1%

    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 91773 in Context

    The median home in 91773 is valued at $714,400 against a median household income of $101,466, a price-to-income ratio of 7.0. That is above 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 Los Angeles County, 91773 ranks 55 of 275 ZIPs on affordability (1 = lowest ratio); the county median ratio is 9.2. Renting takes 26.0% of median household income (median rent $2,202 a month), under the 30% cost-burden threshold.

    91773 ranks 561 of 1,558 statewide on median household income and 588 of 1,558 on median home value; its income is above the $87,339 Los Angeles County median. 71% of households own their home, above the 64% statewide ZIP median, making this a majority-owner ZIP. 38% of adults hold a bachelor's degree or higher, above the 31% median, and the poverty rate is 9.4%, below the 10.8% statewide ZIP median. Unemployment stands at 5.3%.

    With 2,271 residents per square mile across 15 square miles of land, 91773 is far denser than the statewide ZIP median of 1,120 (rank 672 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 91773 primarily serves San Dimas in Los Angeles County, California.

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