ZIP code 94402

ZIP 94402 is a small city in San Mateo County, California, with 25,498 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #715 of 1,803 ranked by population — larger than 60% of them. The median age here is 40.6 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in ZIP 94402 earn a median of $179,683 a year, 128.8% above the national figure of $78,538. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 6.1% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 94402 is valued at $2,000,001, 559.2% above the national figure, while median gross rent runs $3,476 a month, 147.2% above the national figure, or roughly $41,712 across a full year. A household on the local median income would put about 23.2% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 11.1×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 59.3% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Home values sit at 11.1× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

ZIP 94402 is tabulated inside San Mateo County, California, one of 30 ZIP areas the Census publishes for that county and 1,803 across California. This is a mid-sized suburban ZIP inside a county that is split across many delivery areas. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 94402 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 94402 reports a median household income of $179,683, close to the $179,754 county median, and 100% above the $89,916 typical CA ZIP. Owner-occupied homes are valued at a median of $2,000,001, 34% above the county figure and 218% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $3,476 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

California charges 7.25% statewide, and local governments overlapping 94402 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 94402 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.