San Mateo, CA 94402 ZIP Code Profile

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San Mateo, CA

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ZIP Code 94402: Basic Data & USPS Preferred City Name

Preferred Name, USPS
San Mateo, CA 94402

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,398
  • Single Family Addresses: 7,622
  • Multi-Family Addresses: 2,350
  • County: San Mateo County
  • Centroid: Latitude 37.546, Longitude -122.33
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


94402 ZIP Code Map

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San Mateo, CA 94402 Data & Demographics (As of July 1, 2017)


Total Population 25,933
Daytime Population: Workers 16,935
Daytime Population: Residents 12,885
Total Daytime Population (TDP) 29,820
Ratio TDP/Total Population1 1.15
Population in Households 25,654
Population in Familes 20,998
Population in Group Qrtrs 279
Population Density2 5,221
Diversity Index3 66


Median Household Income $118,832
Average Household Income $177,661
Per Capita Income $70,122


Total Housing Units 10,516 (100%)
Owner Occupied HU 6,465 (61.5%)
Renter Occupied HU 3,703 (35.2%)
Vacant Housing Units 348 ( 3.3%)
Median Home Value $1,000,001
Average Home Value $1,059,884


Total Households 10,168
Average Household Size 2.52
Family Households 6,891
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.69% 0.72%
Households 0.59% 0.65%
Families 0.58% 0.63%
Median Household Income   1.92%
Per Capita Income   1.99%

San Mateo, CA 94402 - Peer Comparisons by Rank and Percentile

The table below compares 94402 to the other 1,761 ZIP Codes in California by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 707 60th
Population Density # 436 75th
Diversity Index # 951 46th
Median Household Income # 93 95th
Per Capita Income # 94 95th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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