Home > Demographics > County: San Mateo

2024 Demographics

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Summary Data for County: San Mateo

Population See More Population Data

Population

County: San Mateo

728,762
Persons

State: California 39,172,872 Persons

Percent Population Change: 2020 to 2024

County: San Mateo

-4.67%

State: California -0.92%

Race See More Race Data

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Population by Race County: San Mateo State: California
Persons % of Population Persons % of Population
White 271,304 37.23% 15,278,513 39.00%
Black/African American 14,767 2.03% 2,215,038 5.65%
American Indian/Alaskan Native 6,552 0.90% 642,765 1.64%
Asian 230,377 31.61% 6,241,623 15.93%
Native Hawaiian/Pacific Islander 8,548 1.17% 157,245 0.40%
Some Other Race 104,081 14.28% 8,661,955 22.11%
2+ Races 93,133 12.78% 5,975,733 15.25%

Ethnicity See More Ethnicity Data

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Population by Ethnicity County: San Mateo State: California
Persons % of Population Persons % of Population
Hispanic/Latino 184,762 25.35% 16,180,144 41.30%
Non-Hispanic/Latino 544,000 74.65% 22,992,728 58.70%

Age See More Age Data

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Population by Age Group County: San Mateo State: California
Persons % of Population Persons % of Population
0-4 36,532 5.01% 2,077,354 5.30%
5-9 38,716 5.31% 2,181,469 5.57%
10-14 41,120 5.64% 2,421,275 6.18%
15-17 25,313 3.47% 1,535,768 3.92%
18-20 25,551 3.51% 1,681,239 4.29%
21-24 32,547 4.47% 2,109,414 5.38%
25-34 95,246 13.07% 5,533,827 14.13%
35-44 110,178 15.12% 5,437,084 13.88%
45-54 98,846 13.56% 4,864,367 12.42%
55-64 94,166 12.92% 4,776,532 12.19%
65-74 73,856 10.13% 3,834,304 9.79%
75-84 40,566 5.57% 1,995,084 5.09%
85+ 16,125 2.21% 725,155 1.85%

Sex See More Sex Data

Population by Sex
Population by Sex County: San Mateo State: California
Persons % of Population Persons % of Population
Male 359,830 49.38% 19,351,680 49.40%
Female 368,932 50.62% 19,821,192 50.60%

Households/Income See More Households/Income Data

Households

County: San Mateo

255,649
Households

State: California 13,390,733 Households

Families

County: San Mateo

172,901
Families

State: California 9,208,261 Families

Average Household Size

County: San Mateo

2.81
Persons

State: California 2.86 Persons

Households With Own Children

County: San Mateo

72,274
Households
(28.27% of Households)

State: California 3,886,869 Households (29.03% of Households)

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Median Household Income by Race/Ethnicity County: San Mateo State: California
Value Value
All $146,636 $92,605
White $159,670 $99,794
Black/African American $91,152 $65,932
American Indian/Alaskan Native $102,121 $74,709
Asian $170,978 $120,716
Native Hawaiian/Pacific Islander $140,118 $95,072
Some Other Race $91,109 $71,773
2+ Races $131,948 $90,032
Hispanic/Latino $98,448 $75,515
Non-Hispanic/Latino $163,187 $103,301

Families Below Poverty

County: San Mateo

7,022
Families
(4.06% of Families)

State: California 815,810 Families (8.86% of Families)

Families Below Poverty with Children

County: San Mateo

3,771
Families
(2.18% of Families)

State: California 568,841 Families (6.18% of Families)

Housing See More Housing Data

Housing Units

County: San Mateo

279,713
Housing units

State: California 14,486,492 Housing units

Owner-Occupied Housing Units Average Value

County: San Mateo

$1,584,200

State: California $901,353

Education See More Education Data

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Population 25+ by Educational Attainment County: San Mateo State: California
Persons % of Population Age 25+ Persons % of Population Age 25+
Less than 9th Grade 30,631 5.79% 2,401,583 8.84%
Some High School, No Diploma 19,647 3.71% 1,870,987 6.89%
High School Grad 80,067 15.14% 5,621,896 20.69%
Some College, No Degree 84,532 15.98% 5,434,824 20.01%
Associate Degree 37,906 7.17% 2,147,325 7.90%
Bachelor's Degree 153,183 28.96% 5,965,443 21.96%
Master's Degree 76,909 14.54% 2,537,246 9.34%
Professional Degree 21,308 4.03% 690,747 2.54%
Doctorate Degree 24,800 4.69% 496,302 1.83%

Employment See More Employment Data

Population 16+: Unemployed

County: San Mateo

5.43%

State: California 7.31%

Demographics information provided by Claritas, updated April 2024, under these terms of use.