ZIP Code 94587 — Union City, California

    📍 ZIP code 94587 is in Union City, Alameda County, California.

    ZIP code 94587 is located in Union City, Alameda County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 69,502. The area code for zip code 94587 is 510.

    ZIP
    94587
    City
    Union City
    County
    Alameda County
    State
    California
    Time Zone
    Pacific
    Area Code
    510
    Type
    Standard
    USPS City
    Union City
    Latitude
    37.6032° N
    Longitude
    122.0186° W
    Land Area
    19.6 sq mi
    Water Area
    1.1 sq mi

    ZIP Code 94587 Map

    Coordinates: 37.6032°N, 122.0186°W

    ZIP Code 94587 Demographics

    Population

    Total Population69,502
    Density3,546/sq mi
    Median Age41.3
    Male / Female50.9% / 49.1%

    Income & Economy

    Median Household$138,013
    Per Capita$52,646
    Poverty Rate6.6%
    Unemployment4.6%

    Housing

    Total Units21,663
    Owner-Occupied66%
    Renter-Occupied34%
    Median Home Value$1,006,600
    Median Rent$2,593

    Education

    High School Grad87.1%
    Bachelor's Degree45%

    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 94587 in Context

    The median home in 94587 is valued at $1,006,600 against a median household income of $138,013, a price-to-income ratio of 7.3. 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, 94587 ranks 14 of 47 ZIPs on affordability (1 = lowest ratio); the county median ratio is 7.9. Renting takes 22.5% of median household income (median rent $2,593 a month), under the 30% cost-burden threshold.

    94587 ranks 207 of 1,558 statewide on median household income and 313 of 1,558 on median home value; its income is above the $125,410 Alameda County median. 66% of households own their home, in line with the 64% statewide ZIP median, making this a majority-owner ZIP. 45% of adults hold a bachelor's degree or higher, above the 31% median, and the poverty rate is 6.6%, below the 10.8% statewide ZIP median. Unemployment stands at 4.6%.

    With 3,546 residents per square mile across 19.6 square miles of land, 94587 is far denser than the statewide ZIP median of 1,120 (rank 555 of 1,558). This is predominantly single-family residential with suburban street patterns.

    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 94587 primarily serves Union City in Alameda County, California.

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