San Mateo County CA Information


San Mateo County Subdivisions

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  1. San Mateo County 2019 Demographic Data
  2. Growth Rates forSan Mateo County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2019 Demographics

San Mateo County CA Data & Demographics (As of July 1, 2019)


Total Population 754,378
Population in Households 745,590
Population in Familes 605,049
Population in Group Qrtrs 8,788
Population Density2 1,682
Diversity Index3 79


Median Household Income $118,355
Average Household Income $165,025
Per Capita Income $58,991


Total Housing Units 282,101 (100%)
Owner Occupied HU 157,949 (56.0%)
Renter Occupied HU 111,568 (39.5%)
Vacant Housing Units 12,584 ( 4.5%)
Median Home Value $1,160,298
Average Home Value $1,255,631


Total Households 269,517
Average Household Size 2.77
Family Households 183,451
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2019 2019-2024
Population 0.53% 0.52%
Households 0.48% 0.49%
Families 0.47% 0.48%
Median Household Income   3.04%
Per Capita Income   2.45%


San Mateo County CA - Peer Comparisons by Rank and Percentile

The table below compares San Mateo County to the other 58 counties and county equivalents in California by rank and percentile using July 1, 2019 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 # 15 76th
Population Density # 5 93rd
Diversity Index # 22 66th
Median Household Income # 2 98th
Per Capita Income # 3 97th

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

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California Census Data Comparison Tool

Compare California July 1, 2019 Data
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