Home > CA > San Mateo County > San Mateo > Zip 94401

Zip Code 94401 — San Mateo, CA

94401 is a ZIP Code associated with San Mateo, CA, located within San Mateo. The postal region supports an estimated population of 35,295 residents across Data Pending housing units, with a population density of 4,380.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (37.574450, -122.319420)

Data MetricLocal Statistic
Postal / Zip Code94401
Primary CitySan Mateo
State / ProvinceCA
CountySan Mateo
Total Population35,295
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density4,380.9 people/sq mi
TimezoneAmerica/Los_Angeles

How 94401 Compares

MetricZIP 94401San Mateo CountyCA State Average
Population35,295713,10939,286,245
Median IncomeData PendingN/AN/A
Population Density4,380.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 94402San Mateo2.5 mi25,475N/A
Zip 94403San Mateo2.6 mi43,276N/A
Zip 94404San Mateo3.0 mi35,881N/A
Zip 94010Burlingame3.2 mi43,025N/A
Zip 94002Belmont4.4 mi27,534N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →