ZIP Code 94578 — San Leandro, California

    📍 ZIP code 94578 is in San Leandro, Alameda County, California.

    ZIP code 94578 is located in San Leandro, Alameda County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 42,350. The area code for zip code 94578 is 510.

    ZIP
    94578
    City
    San Leandro
    County
    Alameda County
    State
    California
    Time Zone
    Pacific
    Area Code
    510
    Type
    Standard
    USPS City
    San Leandro
    Latitude
    37.7061° N
    Longitude
    122.1256° W
    Land Area
    4.6 sq mi
    Water Area
    0 sq mi

    ZIP Code 94578 Map

    Coordinates: 37.7061°N, 122.1256°W

    ZIP Code 94578 Demographics

    Population

    Total Population42,350
    Density9,207/sq mi
    Median Age38
    Male / Female45.6% / 54.4%

    Income & Economy

    Median Household$87,120
    Per Capita$36,558
    Poverty Rate12.3%
    Unemployment5.1%

    Housing

    Total Units14,736
    Owner-Occupied40.1%
    Renter-Occupied59.9%
    Median Home Value$733,900
    Median Rent$1,951

    Education

    High School Grad83.1%
    Bachelor's Degree26.2%

    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 94578 in Context

    The median home in 94578 is valued at $733,900 against a median household income of $87,120, a price-to-income ratio of 8.4. 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 Alameda County, 94578 ranks 29 of 47 ZIPs on affordability (1 = lowest ratio); the county median ratio is 7.9. Renting takes 26.9% of median household income (median rent $1,951 a month), under the 30% cost-burden threshold.

    94578 ranks 778 of 1,558 statewide on median household income and 568 of 1,558 on median home value; its income is below the $125,410 Alameda County median. 40% of households own their home, below the 64% statewide ZIP median, so most residents rent. 26% of adults hold a bachelor's degree or higher, below the 31% median, and the poverty rate is 12.3%, above the 10.8% statewide ZIP median. Unemployment stands at 5.1%.

    With 9,207 residents per square mile across 4.6 square miles of land, 94578 is far denser than the statewide ZIP median of 1,120 (rank 188 of 1,558). This is a mixed urban fabric of apartments, small-lot houses and commercial corridors.

    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 94578 primarily serves San Leandro in Alameda County, California.

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