San Mateo County CA Information

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San Mateo County Subdivisions

San Mateo County CA Data & Demographics

Source: 2020-2024 American Community Survey 5-Year Estimates

POPULATION

Total Population 742,340 (100%)
Population Density 1,655 per sq mi
Diversity Index1 72
 
 

INCOME

Median Household Income $158,855
Per Capita Income $84,288
Median Home Value $1,559,600
 

HOUSING

Total HU (Housing Units) 287,184 (100%)
Owner Occupied HU 154,607 (53.8%)
Renter Occupied HU 109,812 (38.2%)
Vacant Housing Units 22,765 (7.9%)
 

HOUSEHOLDS

Total Households 264,419
Average Household Size 2.76
Family Households 179,491 (67.9%)
NOTES
  1. The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).

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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 2020-2024 American Community Survey 5-Year Estimates 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 75th
Population Density # 5 93rd
Median Household Income # 2 98th
Per Capita Income # 3 96th
Diversity Index # 5 93rd

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

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Compare California 2020-2024 American Community Survey 5-Year Estimates Data
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  4. See the References & Data Sources page for more information about methodology and sources of data.


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