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Population by Age in Mercer Island City
*Base on 2010 Data
| Total population | 22,699 | 100.00% |
| Under 5 years | 1,009 | 4.45% |
| 5 to 9 years | 1,565 | 6.89% |
| 10 to 14 years | 1,788 | 7.88% |
| 15 to 19 years | 1,645 | 7.25% |
| 20 to 24 years | 683 | 3.01% |
| 25 to 29 years | 813 | 3.58% |
| 30 to 34 years | 779 | 3.43% |
| 35 to 39 years | 1,175 | 5.18% |
| 40 to 44 years | 1,537 | 6.77% |
| 45 to 49 years | 1,915 | 8.44% |
| 50 to 54 years | 2,067 | 9.11% |
| 55 to 59 years | 1,819 | 8.01% |
| 60 to 64 years | 1,481 | 6.52% |
| 65 to 69 years | 1,095 | 4.82% |
| 70 to 74 years | 914 | 4.03% |
| 75 to 79 years | 811 | 3.57% |
| 80 to 84 years | 737 | 3.25% |
| 85 years and over | 866 | 3.82% |
Male Population in Mercer Island City
*Base on 2010 Data
| Male population | 11,046 | 48.66% |
| Under 5 years | 531 | 2.34% |
| 5 to 9 years | 838 | 3.69% |
| 10 to 14 years | 925 | 4.08% |
| 15 to 19 years | 884 | 3.89% |
| 20 to 24 years | 338 | 1.49% |
| 25 to 29 years | 408 | 1.80% |
| 30 to 34 years | 363 | 1.60% |
| 35 to 39 years | 541 | 2.38% |
| 40 to 44 years | 702 | 3.09% |
| 45 to 49 years | 918 | 4.04% |
| 50 to 54 years | 965 | 4.25% |
| 55 to 59 years | 898 | 3.96% |
| 60 to 64 years | 752 | 3.31% |
| 65 to 69 years | 528 | 2.33% |
| 70 to 74 years | 423 | 1.86% |
| 75 to 79 years | 357 | 1.57% |
| 80 to 84 years | 339 | 1.49% |
| 85 years and over | 336 | 1.48% |
Female Population in Mercer Island City
*Base on 2010 Data
| Female population | 11,653 | 51.34% |
| Under 5 years | 478 | 2.11% |
| 5 to 9 years | 727 | 3.20% |
| 10 to 14 years | 863 | 3.80% |
| 15 to 19 years | 761 | 3.35% |
| 20 to 24 years | 345 | 1.52% |
| 25 to 29 years | 405 | 1.78% |
| 30 to 34 years | 416 | 1.83% |
| 35 to 39 years | 634 | 2.79% |
| 40 to 44 years | 835 | 3.68% |
| 45 to 49 years | 997 | 4.39% |
| 50 to 54 years | 1,102 | 4.85% |
| 55 to 59 years | 921 | 4.06% |
| 60 to 64 years | 729 | 3.21% |
| 65 to 69 years | 567 | 2.50% |
| 70 to 74 years | 491 | 2.16% |
| 75 to 79 years | 454 | 2.00% |
| 80 to 84 years | 398 | 1.75% |
| 85 years and over | 530 | 2.33% |
Median Age in Mercer Island City
*Base on 2010 Data
| Both | 46.00% | |
| Male | 45.00% | |
| Female | 46.80% |
Race in Mercer Island City
*Base on 2010 Data
| Total | 22,699 | 100.00% |
| Population of one race | 21,813 | 96.10% |
| White | 17,677 | 77.88% |
| Black or African American | 286 | 1.26% |
| American Indian and Alaska Native | 51 | 0.22% |
| Asian | 3,615 | 15.93% |
| Asian Indian | 392 | 1.73% |
| Chinese | 1,661 | 7.32% |
| Filipino | 120 | 0.53% |
| Japanese | 511 | 2.25% |
| Korean | 600 | 2.64% |
| Vietnamese | 112 | 0.49% |
| Other Asian | 219 | 0.96% |
| Native Hawaiian and Other Pacific Islander | 26 | 0.11% |
| Native Hawaiian | 4 | 0.02% |
| Guamanian or Chamorro | 11 | 0.05% |
| Samoan | 2 | 0.01% |
| Other Pacific Islander | 9 | 0.04% |
| Some Other Race | 158 | 0.70% |
| Population of Two or More Races | 886 | 3.90% |
| White; American Indian and Alaska Native | 70 | 0.31% |
| White; Asian | 554 | 2.44% |
| White; Black or African American | 68 | 0.30% |
| White; Some Other Race | 36 | 0.16% |
The Population 16 Years in Mercer Island City
*Base on 2010 Data
| Total | 17,909 | 100.00% |
| Male | 8,533 | 47.65% |
| Female | 9,376 | 52.35% |
The Population 18 Years in Mercer Island City
*Base on 2010 Data
| Total | 17,126 | 100.00% |
| Male | 8,114 | 47.38% |
| Female | 9,012 | 52.62% |
The Population 21 Years in Mercer Island City
*Base on 2010 Data
| Total | 16,557 | 100.00% |
| Male | 7,799 | 47.10% |
| Female | 8,758 | 52.90% |
The Population 62 Years in Mercer Island City
*Base on 2010 Data
| Total | 5,296 | 100.00% |
| Male | 2,423 | 45.75% |
| Female | 2,873 | 54.25% |
The Population 65 Years in Mercer Island City
*Base on 2010 Data
| Total | 4,423 | 100.00% |
| Male | 1,983 | 44.83% |
| Female | 2,440 | 55.17% |
Race (total races tallied) in Mercer Island City
*Base on 2010 Data
| White alone or in combination with one or more other races | 18,494 | 78.16% |
| Black or African American alone or in combination with one or more other races | 407 | 1.72% |
| American Indian and Alaska Native alone or in combination with one or more other races | 169 | 0.71% |
| Asian alone or in combination with one or more other races | 4,279 | 18.08% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 84 | 0.35% |
| Some Other Race alone or in combination with one or more other races | 230 | 0.97% |
Hispanic or Latino by Specific Origin in Mercer Island City
*Base on 2010 Data
| Total | 22,699 | 100.00% |
| Hispanic or Latino (of any race) | 634 | 2.79% |
| Mexican | 301 | 1.33% |
| Puerto Rican | 34 | 0.15% |
| Cuban | 9 | 0.04% |
| Other Hispanic or Latino | 290 | 1.28% |
| Not Hispanic or Latino | 22,065 | 97.21% |
Hispanic or Latino and Race in Mercer Island City
*Base on 2010 Data
| Total | 22,699 | 100.00% |
| Hispanic or Latino | 634 | 2.79% |
| White alone | 422 | 1.86% |
| Black or African American alone | 4 | 0.02% |
| American Indian and Alaska Native alone | 11 | 0.05% |
| Asian alone | 17 | 0.07% |
| Native Hawaiian and Other Pacific Islander alone | 1 | 0.00% |
| Some Other Race alone | 98 | 0.43% |
| Two or More Races | 81 | 0.36% |
| Not Hispanic or Latino | 22,065 | 97.21% |
| White alone | 17,255 | 76.02% |
| Black or African American alone | 282 | 1.24% |
| American Indian and Alaska Native alone | 40 | 0.18% |
| Asian alone | 3,598 | 15.85% |
| Native Hawaiian and Other Pacific Islander alone | 25 | 0.11% |
| Some Other Race alone | 60 | 0.26% |
| Two or More Races | 805 | 3.55% |
Relationship in Mercer Island City
*Base on 2010 Data
| Total | 22,699 | 100.00% |
| In households | 22,631 | 99.70% |
| Householder | 9,109 | 40.13% |
| Spouse | 5,671 | 24.98% |
| Child | 6,690 | 29.47% |
| Own child under 18 years | 5,432 | 23.93% |
| Other relatives | 485 | 2.14% |
| Under 18 years | 114 | 0.50% |
| 65 years and over | 153 | 0.67% |
| Nonrelatives | 676 | 2.98% |
| Under 18 years | 27 | 0.12% |
| 65 years and over | 70 | 0.31% |
| Unmarried partner | 313 | 1.38% |
| In group quarters | 68 | 0.30% |
| Institutionalized population | 43 | 0.19% |
| Male | 23 | 0.10% |
| Female | 20 | 0.09% |
| Noninstitutionalized population | 25 | 0.11% |
| Male | 9 | 0.04% |
| Female | 16 | 0.07% |
Households by Type in Mercer Island City
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 9,109 | 100.00% |
| Family households (families) | 6,532 | 71.71% |
| With own children under 18 years | 2,979 | 32.70% |
| Husband-wife family | 5,671 | 62.26% |
| With own children under 18 years | 2,475 | 27.17% |
| Male householder, no wife present | 265 | 2.91% |
| With own children under 18 years | 154 | 1.69% |
| Female householder, no husband present | 596 | 6.54% |
| With own children under 18 years | 350 | 3.84% |
| Nonfamily households | 2,577 | 28.29% |
| Householder living alone | 2,198 | 24.13% |
| Male | 799 | 8.77% |
| 65 years and over | 263 | 2.89% |
| Female | 1,399 | 15.36% |
| 65 years and over | 810 | 8.89% |
Households with individuals under 18 years in Mercer Island City
*Base on 2010 Data
| Total | 3,051 | 33.49% |
Households with individuals under 65 years in Mercer Island City
*Base on 2010 Data
| Total | 3,036 | 33.33% |
Average Household Size in Mercer Island City
*Base on 2010 Data
| Average household size | 2 | % |
Average Family Size in Mercer Island City
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Mercer Island City
*Base on 2010 Data
| Total | 9,930 | 100.00% |
| Occupied housing units | 9,109 | 91.73% |
| Vacant housing units | 821 | 8.27% |
| For rent | 285 | 2.87% |
| Rented, not occupied | 37 | 0.37% |
| For sale only | 146 | 1.47% |
| Sold, not occupied | 27 | 0.27% |
| For seasonal, recreational, or occasional use | 157 | 1.58% |
| All other vacants | 169 | 1.70% |
Homeowner Vacancy Rate in Mercer Island City
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 2.20% |
Rental Vacancy Rate in Mercer Island City
*Base on 2010 Data
| Rental vacancy rate (percent) | 10.00% |
Housing Tenure(Occupied housing units) in Mercer Island City
*Base on 2010 Data
| Total | 9,109 | 100.00% |
| Owner-occupied housing units | 6,595 | 72.40% |
| Renter-occupied housing units | 2,514 | 27.60% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Mercer Island City
*Base on 2010 Data
| Owner-occupied housing units | 17,656 | 78.02% |
| Renter-occupied housing units | 4,975 | 21.98% |
Average Household Size of Occupied Housing Units by Tenure in Mercer Island City
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 2 | % |