ZIP Code 94121 — San Francisco, California

    📍 ZIP code 94121 is in San Francisco, San Francisco County, California.

    ZIP code 94121 is located in San Francisco, San Francisco County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 43,304. The area code for zip code 94121 is 415.

    ZIP
    94121
    City
    San Francisco
    County
    San Francisco County
    State
    California
    Time Zone
    Pacific
    Area Code
    415
    Type
    Standard
    USPS City
    San Francisco
    Latitude
    37.7768° N
    Longitude
    122.4947° W
    Land Area
    2.5 sq mi
    Water Area
    0 sq mi

    ZIP Code 94121 Map

    Coordinates: 37.7768°N, 122.4947°W

    ZIP Code 94121 Demographics

    Population

    Total Population43,304
    Density17,322/sq mi
    Median Age42.6
    Male / Female47.4% / 52.6%

    Income & Economy

    Median Household$132,519
    Per Capita$79,208
    Poverty Rate9%
    Unemployment5.1%

    Housing

    Total Units19,606
    Owner-Occupied43.6%
    Renter-Occupied56.4%
    Median Home Value$1,583,700
    Median Rent$2,152

    Education

    High School Grad91.3%
    Bachelor's Degree63.9%

    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 94121 in Context

    The median home in 94121 is valued at $1,583,700 against a median household income of $132,519, a price-to-income ratio of 12.0. That is far 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, which means a household earning the local median income cannot finance the local median home on conventional terms. Within San Francisco County, 94121 ranks 18 of 25 ZIPs on affordability (1 = lowest ratio); the county median ratio is 9.6. Renting takes 19.5% of median household income (median rent $2,152 a month), under the 30% cost-burden threshold.

    94121 ranks 240 of 1,558 statewide on median household income and 102 of 1,558 on median home value; its income is below the $145,931 San Francisco County median. 44% of households own their home, below the 64% statewide ZIP median, so most residents rent. 64% of adults hold a bachelor's degree or higher, far above the 31% median, and the poverty rate is 9.0%, below the 10.8% statewide ZIP median. Unemployment stands at 5.1%.

    With 17,322 residents per square mile across 2.5 square miles of land, 94121 is far denser than the statewide ZIP median of 1,120 (rank 44 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 94121 primarily serves San Francisco in San Francisco County, California.

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