ZIP Code 94030 — Millbrae, California

    📍 ZIP code 94030 is in Millbrae, San Mateo County, California.

    ZIP code 94030 is located in Millbrae, San Mateo County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 22,825. The area code for zip code 94030 is 650.

    ZIP
    94030
    City
    Millbrae
    County
    San Mateo County
    State
    California
    Time Zone
    Pacific
    Area Code
    650
    Type
    Standard
    USPS City
    Millbrae
    Latitude
    37.5990° N
    Longitude
    122.4020° W
    Land Area
    3.4 sq mi
    Water Area
    0 sq mi

    ZIP Code 94030 Map

    Coordinates: 37.5990°N, 122.4020°W

    ZIP Code 94030 Demographics

    Population

    Total Population22,825
    Density6,713/sq mi
    Median Age45.7
    Male / Female48.7% / 51.3%

    Income & Economy

    Median Household$146,649
    Per Capita$71,386
    Poverty Rate6.4%
    Unemployment5.3%

    Housing

    Total Units8,592
    Owner-Occupied61.4%
    Renter-Occupied38.6%
    Median Home Value$1,874,100
    Median Rent$3,322

    Education

    High School Grad93.9%
    Bachelor's Degree49.7%

    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 94030 in Context

    The median home in 94030 is valued at $1,874,100 against a median household income of $146,649, a price-to-income ratio of 12.8. 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 Mateo County, 94030 ranks 27 of 28 ZIPs on affordability (1 = lowest ratio); the county median ratio is 9.0. Renting takes 27.2% of median household income (median rent $3,322 a month), under the 30% cost-burden threshold.

    94030 ranks 166 of 1,558 statewide on median household income and 57 of 1,558 on median home value; its income is below the $161,447 San Mateo County median. 61% of households own their home, in line with the 64% statewide ZIP median, making this a majority-owner ZIP. 50% of adults hold a bachelor's degree or higher, far above the 31% median, and the poverty rate is 6.4%, below the 10.8% statewide ZIP median. Unemployment stands at 5.3%.

    With 6,713 residents per square mile across 3.4 square miles of land, 94030 is far denser than the statewide ZIP median of 1,120 (rank 320 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 94030 primarily serves Millbrae in San Mateo County, California.

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