ZIP Code 94596 — Walnut Creek, California

    📍 ZIP code 94596 is in Walnut Creek, Contra Costa County, California.

    ZIP code 94596 is located in Walnut Creek, Contra Costa County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 23,795. The area code for zip code 94596 is 925.

    ZIP
    94596
    City
    Walnut Creek
    County
    Contra Costa County
    State
    California
    Time Zone
    Pacific
    Area Code
    925
    Type
    Standard
    USPS City
    Walnut Creek
    Latitude
    37.8891° N
    Longitude
    122.0376° W
    Land Area
    6.1 sq mi
    Water Area
    0 sq mi

    ZIP Code 94596 Map

    Coordinates: 37.8891°N, 122.0376°W

    ZIP Code 94596 Demographics

    Population

    Total Population23,795
    Density3,901/sq mi
    Median Age38
    Male / Female49.6% / 50.4%

    Income & Economy

    Median Household$135,422
    Per Capita$82,889
    Poverty Rate6%
    Unemployment4.6%

    Housing

    Total Units11,184
    Owner-Occupied45.1%
    Renter-Occupied54.9%
    Median Home Value$1,241,200
    Median Rent$2,420

    Education

    High School Grad97.4%
    Bachelor's Degree70.9%

    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 94596 in Context

    The median home in 94596 is valued at $1,241,200 against a median household income of $135,422, a price-to-income ratio of 9.2. 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 Contra Costa County, 94596 ranks 39 of 40 ZIPs on affordability (1 = lowest ratio); the county median ratio is 6.8. Renting takes 21.4% of median household income (median rent $2,420 a month), under the 30% cost-burden threshold.

    94596 ranks 231 of 1,558 statewide on median household income and 181 of 1,558 on median home value; its income is above the $120,565 Contra Costa County median. 45% of households own their home, below the 64% statewide ZIP median, so most residents rent. 71% of adults hold a bachelor's degree or higher, far above the 31% median, and the poverty rate is 6.0%, below the 10.8% statewide ZIP median and among the lowest in the state. Unemployment stands at 4.6%.

    With 3,901 residents per square mile across 6.1 square miles of land, 94596 is far denser than the statewide ZIP median of 1,120 (rank 520 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 94596 primarily serves Walnut Creek in Contra Costa County, California.

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