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Population by Age in San Mateo County
*Base on 2010 Data
| Total population | 718,451 | 100.00% |
| Under 5 years | 46,360 | 6.45% |
| 5 to 9 years | 44,729 | 6.23% |
| 10 to 14 years | 42,463 | 5.91% |
| 15 to 19 years | 41,249 | 5.74% |
| 20 to 24 years | 40,098 | 5.58% |
| 25 to 29 years | 48,320 | 6.73% |
| 30 to 34 years | 51,014 | 7.10% |
| 35 to 39 years | 53,358 | 7.43% |
| 40 to 44 years | 54,742 | 7.62% |
| 45 to 49 years | 56,424 | 7.85% |
| 50 to 54 years | 54,245 | 7.55% |
| 55 to 59 years | 47,865 | 6.66% |
| 60 to 64 years | 41,322 | 5.75% |
| 65 to 69 years | 28,485 | 3.96% |
| 70 to 74 years | 21,500 | 2.99% |
| 75 to 79 years | 16,888 | 2.35% |
| 80 to 84 years | 14,085 | 1.96% |
| 85 years and over | 15,304 | 2.13% |
Male Population in San Mateo County
*Base on 2010 Data
| Male population | 353,168 | 49.16% |
| Under 5 years | 23,652 | 3.29% |
| 5 to 9 years | 22,820 | 3.18% |
| 10 to 14 years | 21,750 | 3.03% |
| 15 to 19 years | 21,346 | 2.97% |
| 20 to 24 years | 21,328 | 2.97% |
| 25 to 29 years | 24,734 | 3.44% |
| 30 to 34 years | 25,735 | 3.58% |
| 35 to 39 years | 26,799 | 3.73% |
| 40 to 44 years | 26,912 | 3.75% |
| 45 to 49 years | 27,732 | 3.86% |
| 50 to 54 years | 26,604 | 3.70% |
| 55 to 59 years | 23,192 | 3.23% |
| 60 to 64 years | 19,651 | 2.74% |
| 65 to 69 years | 13,045 | 1.82% |
| 70 to 74 years | 9,647 | 1.34% |
| 75 to 79 years | 7,340 | 1.02% |
| 80 to 84 years | 5,643 | 0.79% |
| 85 years and over | 5,238 | 0.73% |
Female Population in San Mateo County
*Base on 2010 Data
| Female population | 365,283 | 50.84% |
| Under 5 years | 22,708 | 3.16% |
| 5 to 9 years | 21,909 | 3.05% |
| 10 to 14 years | 20,713 | 2.88% |
| 15 to 19 years | 19,903 | 2.77% |
| 20 to 24 years | 18,770 | 2.61% |
| 25 to 29 years | 23,586 | 3.28% |
| 30 to 34 years | 25,279 | 3.52% |
| 35 to 39 years | 26,559 | 3.70% |
| 40 to 44 years | 27,830 | 3.87% |
| 45 to 49 years | 28,692 | 3.99% |
| 50 to 54 years | 27,641 | 3.85% |
| 55 to 59 years | 24,673 | 3.43% |
| 60 to 64 years | 21,671 | 3.02% |
| 65 to 69 years | 15,440 | 2.15% |
| 70 to 74 years | 11,853 | 1.65% |
| 75 to 79 years | 9,548 | 1.33% |
| 80 to 84 years | 8,442 | 1.18% |
| 85 years and over | 10,066 | 1.40% |
Median Age in San Mateo County
*Base on 2010 Data
| Both | 39.30% | |
| Male | 37.90% | |
| Female | 40.50% |
Race in San Mateo County
*Base on 2010 Data
| Total | 718,451 | 100.00% |
| Population of one race | 680,241 | 94.68% |
| White | 383,535 | 53.38% |
| Black or African American | 20,436 | 2.84% |
| American Indian and Alaska Native | 3,306 | 0.46% |
| Asian | 178,118 | 24.79% |
| Asian Indian | 13,486 | 1.88% |
| Chinese | 64,796 | 9.02% |
| Filipino | 70,191 | 9.77% |
| Japanese | 8,779 | 1.22% |
| Korean | 5,496 | 0.76% |
| Vietnamese | 3,492 | 0.49% |
| Other Asian | 11,878 | 1.65% |
| Native Hawaiian and Other Pacific Islander | 10,317 | 1.44% |
| Native Hawaiian | 525 | 0.07% |
| Guamanian or Chamorro | 339 | 0.05% |
| Samoan | 1,972 | 0.27% |
| Other Pacific Islander | 7,481 | 1.04% |
| Some Other Race | 84,529 | 11.77% |
| Population of Two or More Races | 38,210 | 5.32% |
| White; American Indian and Alaska Native | 2,598 | 0.36% |
| White; Asian | 14,145 | 1.97% |
| White; Black or African American | 2,543 | 0.35% |
| White; Some Other Race | 7,794 | 1.08% |
The Population 16 Years in San Mateo County
*Base on 2010 Data
| Total | 576,308 | 100.00% |
| Male | 280,568 | 48.68% |
| Female | 295,740 | 51.32% |
The Population 18 Years in San Mateo County
*Base on 2010 Data
| Total | 558,679 | 100.00% |
| Male | 271,529 | 48.60% |
| Female | 287,150 | 51.40% |
The Population 21 Years in San Mateo County
*Base on 2010 Data
| Total | 536,294 | 100.00% |
| Male | 259,593 | 48.40% |
| Female | 276,701 | 51.60% |
The Population 62 Years in San Mateo County
*Base on 2010 Data
| Total | 119,648 | 100.00% |
| Male | 51,969 | 43.43% |
| Female | 67,679 | 56.57% |
The Population 65 Years in San Mateo County
*Base on 2010 Data
| Total | 96,262 | 100.00% |
| Male | 40,913 | 42.50% |
| Female | 55,349 | 57.50% |
Race (total races tallied) in San Mateo County
*Base on 2010 Data
| White alone or in combination with one or more other races | 414,430 | 54.52% |
| Black or African American alone or in combination with one or more other races | 26,338 | 3.46% |
| American Indian and Alaska Native alone or in combination with one or more other races | 8,367 | 1.10% |
| Asian alone or in combination with one or more other races | 199,294 | 26.22% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 15,069 | 1.98% |
| Some Other Race alone or in combination with one or more other races | 96,649 | 12.71% |
Hispanic or Latino by Specific Origin in San Mateo County
*Base on 2010 Data
| Total | 718,451 | 100.00% |
| Hispanic or Latino (of any race) | 182,502 | 25.40% |
| Mexican | 112,444 | 15.65% |
| Puerto Rican | 3,962 | 0.55% |
| Cuban | 1,193 | 0.17% |
| Other Hispanic or Latino | 64,903 | 9.03% |
| Not Hispanic or Latino | 535,949 | 74.60% |
Hispanic or Latino and Race in San Mateo County
*Base on 2010 Data
| Total | 718,451 | 100.00% |
| Hispanic or Latino | 182,502 | 25.40% |
| White alone | 79,926 | 11.12% |
| Black or African American alone | 1,673 | 0.23% |
| American Indian and Alaska Native alone | 2,181 | 0.30% |
| Asian alone | 2,184 | 0.30% |
| Native Hawaiian and Other Pacific Islander alone | 433 | 0.06% |
| Some Other Race alone | 81,820 | 11.39% |
| Two or More Races | 14,285 | 1.99% |
| Not Hispanic or Latino | 535,949 | 74.60% |
| White alone | 303,609 | 42.26% |
| Black or African American alone | 18,763 | 2.61% |
| American Indian and Alaska Native alone | 1,125 | 0.16% |
| Asian alone | 175,934 | 24.49% |
| Native Hawaiian and Other Pacific Islander alone | 9,884 | 1.38% |
| Some Other Race alone | 2,709 | 0.38% |
| Two or More Races | 23,925 | 3.33% |
Relationship in San Mateo County
*Base on 2010 Data
| Total | 718,451 | 100.00% |
| In households | 709,598 | 98.77% |
| Householder | 257,837 | 35.89% |
| Spouse | 135,210 | 18.82% |
| Child | 200,774 | 27.95% |
| Own child under 18 years | 139,324 | 19.39% |
| Other relatives | 63,963 | 8.90% |
| Under 18 years | 16,531 | 2.30% |
| 65 years and over | 11,892 | 1.66% |
| Nonrelatives | 51,814 | 7.21% |
| Under 18 years | 3,270 | 0.46% |
| 65 years and over | 2,911 | 0.41% |
| Unmarried partner | 16,115 | 2.24% |
| In group quarters | 8,853 | 1.23% |
| Institutionalized population | 3,556 | 0.49% |
| Male | 1,846 | 0.26% |
| Female | 1,710 | 0.24% |
| Noninstitutionalized population | 5,297 | 0.74% |
| Male | 2,917 | 0.41% |
| Female | 2,380 | 0.33% |
Households by Type in San Mateo County
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 257,837 | 100.00% |
| Family households (families) | 175,607 | 68.11% |
| With own children under 18 years | 79,431 | 30.81% |
| Husband-wife family | 135,210 | 52.44% |
| With own children under 18 years | 62,141 | 24.10% |
| Male householder, no wife present | 12,478 | 4.84% |
| With own children under 18 years | 5,075 | 1.97% |
| Female householder, no husband present | 27,919 | 10.83% |
| With own children under 18 years | 12,215 | 4.74% |
| Nonfamily households | 82,230 | 31.89% |
| Householder living alone | 63,219 | 24.52% |
| Male | 26,483 | 10.27% |
| 65 years and over | 6,438 | 2.50% |
| Female | 36,736 | 14.25% |
| 65 years and over | 16,631 | 6.45% |
Households with individuals under 18 years in San Mateo County
*Base on 2010 Data
| Total | 87,986 | 34.12% |
Households with individuals under 65 years in San Mateo County
*Base on 2010 Data
| Total | 69,403 | 26.92% |
Average Household Size in San Mateo County
*Base on 2010 Data
| Average household size | 3 | % |
Average Family Size in San Mateo County
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in San Mateo County
*Base on 2010 Data
| Total | 271,031 | 100.00% |
| Occupied housing units | 257,837 | 95.13% |
| Vacant housing units | 13,194 | 4.87% |
| For rent | 5,113 | 1.89% |
| Rented, not occupied | 340 | 0.13% |
| For sale only | 1,946 | 0.72% |
| Sold, not occupied | 620 | 0.23% |
| For seasonal, recreational, or occasional use | 1,998 | 0.74% |
| All other vacants | 3,177 | 1.17% |
Homeowner Vacancy Rate in San Mateo County
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 1.30% |
Rental Vacancy Rate in San Mateo County
*Base on 2010 Data
| Rental vacancy rate (percent) | 4.60% |
Housing Tenure(Occupied housing units) in San Mateo County
*Base on 2010 Data
| Total | 257,837 | 100.00% |
| Owner-occupied housing units | 153,110 | 59.38% |
| Renter-occupied housing units | 104,727 | 40.62% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in San Mateo County
*Base on 2010 Data
| Owner-occupied housing units | 430,537 | 60.67% |
| Renter-occupied housing units | 279,061 | 39.33% |
Average Household Size of Occupied Housing Units by Tenure in San Mateo County
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 3 | % |