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Population by Age in Janesville
*Base on 2010 Data
| Total population | 1,408 | 100.00% |
| Under 5 years | 74 | 5.26% |
| 5 to 9 years | 100 | 7.10% |
| 10 to 14 years | 102 | 7.24% |
| 15 to 19 years | 97 | 6.89% |
| 20 to 24 years | 40 | 2.84% |
| 25 to 29 years | 51 | 3.62% |
| 30 to 34 years | 80 | 5.68% |
| 35 to 39 years | 59 | 4.19% |
| 40 to 44 years | 101 | 7.17% |
| 45 to 49 years | 133 | 9.45% |
| 50 to 54 years | 136 | 9.66% |
| 55 to 59 years | 131 | 9.30% |
| 60 to 64 years | 108 | 7.67% |
| 65 to 69 years | 66 | 4.69% |
| 70 to 74 years | 49 | 3.48% |
| 75 to 79 years | 38 | 2.70% |
| 80 to 84 years | 20 | 1.42% |
| 85 years and over | 23 | 1.63% |
Male Population in Janesville
*Base on 2010 Data
| Male population | 725 | 51.49% |
| Under 5 years | 36 | 2.56% |
| 5 to 9 years | 47 | 3.34% |
| 10 to 14 years | 59 | 4.19% |
| 15 to 19 years | 54 | 3.84% |
| 20 to 24 years | 21 | 1.49% |
| 25 to 29 years | 25 | 1.78% |
| 30 to 34 years | 42 | 2.98% |
| 35 to 39 years | 25 | 1.78% |
| 40 to 44 years | 48 | 3.41% |
| 45 to 49 years | 68 | 4.83% |
| 50 to 54 years | 72 | 5.11% |
| 55 to 59 years | 59 | 4.19% |
| 60 to 64 years | 61 | 4.33% |
| 65 to 69 years | 35 | 2.49% |
| 70 to 74 years | 28 | 1.99% |
| 75 to 79 years | 20 | 1.42% |
| 80 to 84 years | 12 | 0.85% |
| 85 years and over | 13 | 0.92% |
Female Population in Janesville
*Base on 2010 Data
| Female population | 683 | 48.51% |
| Under 5 years | 38 | 2.70% |
| 5 to 9 years | 53 | 3.76% |
| 10 to 14 years | 43 | 3.05% |
| 15 to 19 years | 43 | 3.05% |
| 20 to 24 years | 19 | 1.35% |
| 25 to 29 years | 26 | 1.85% |
| 30 to 34 years | 38 | 2.70% |
| 35 to 39 years | 34 | 2.41% |
| 40 to 44 years | 53 | 3.76% |
| 45 to 49 years | 65 | 4.62% |
| 50 to 54 years | 64 | 4.55% |
| 55 to 59 years | 72 | 5.11% |
| 60 to 64 years | 47 | 3.34% |
| 65 to 69 years | 31 | 2.20% |
| 70 to 74 years | 21 | 1.49% |
| 75 to 79 years | 18 | 1.28% |
| 80 to 84 years | 8 | 0.57% |
| 85 years and over | 10 | 0.71% |
Median Age in Janesville
*Base on 2010 Data
| Both | 45.00% | |
| Male | 45.30% | |
| Female | 44.50% |
Race in Janesville
*Base on 2010 Data
| Total | 1,408 | 100.00% |
| Population of one race | 1,369 | 97.23% |
| White | 1,283 | 91.12% |
| Black or African American | 13 | 0.92% |
| American Indian and Alaska Native | 32 | 2.27% |
| Asian | 11 | 0.78% |
| Asian Indian | 1 | 0.07% |
| Chinese | 1 | 0.07% |
| Filipino | 3 | 0.21% |
| Japanese | 4 | 0.28% |
| Korean | 0 | 0.00% |
| Vietnamese | 0 | 0.00% |
| Other Asian | 2 | 0.14% |
| Native Hawaiian and Other Pacific Islander | 3 | 0.21% |
| Native Hawaiian | 0 | 0.00% |
| Guamanian or Chamorro | 0 | 0.00% |
| Samoan | 0 | 0.00% |
| Other Pacific Islander | 3 | 0.21% |
| Some Other Race | 27 | 1.92% |
| Population of Two or More Races | 39 | 2.77% |
| White; American Indian and Alaska Native | 26 | 1.85% |
| White; Asian | 4 | 0.28% |
| White; Black or African American | 4 | 0.28% |
| White; Some Other Race | 3 | 0.21% |
The Population 16 Years in Janesville
*Base on 2010 Data
| Total | 1,113 | 100.00% |
| Male | 572 | 51.39% |
| Female | 541 | 48.61% |
The Population 18 Years in Janesville
*Base on 2010 Data
| Total | 1,064 | 100.00% |
| Male | 544 | 51.13% |
| Female | 520 | 48.87% |
The Population 21 Years in Janesville
*Base on 2010 Data
| Total | 1,026 | 100.00% |
| Male | 525 | 51.17% |
| Female | 501 | 48.83% |
The Population 62 Years in Janesville
*Base on 2010 Data
| Total | 252 | 100.00% |
| Male | 138 | 54.76% |
| Female | 114 | 45.24% |
The Population 65 Years in Janesville
*Base on 2010 Data
| Total | 196 | 100.00% |
| Male | 108 | 55.10% |
| Female | 88 | 44.90% |
Race (total races tallied) in Janesville
*Base on 2010 Data
| White alone or in combination with one or more other races | 1,320 | 91.22% |
| Black or African American alone or in combination with one or more other races | 17 | 1.17% |
| American Indian and Alaska Native alone or in combination with one or more other races | 60 | 4.15% |
| Asian alone or in combination with one or more other races | 15 | 1.04% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 5 | 0.35% |
| Some Other Race alone or in combination with one or more other races | 30 | 2.07% |
Hispanic or Latino by Specific Origin in Janesville
*Base on 2010 Data
| Total | 1,408 | 100.00% |
| Hispanic or Latino (of any race) | 118 | 8.38% |
| Mexican | 87 | 6.18% |
| Puerto Rican | 3 | 0.21% |
| Cuban | 0 | 0.00% |
| Other Hispanic or Latino | 28 | 1.99% |
| Not Hispanic or Latino | 1,290 | 91.62% |
Hispanic or Latino and Race in Janesville
*Base on 2010 Data
| Total | 1,408 | 100.00% |
| Hispanic or Latino | 118 | 8.38% |
| White alone | 74 | 5.26% |
| Black or African American alone | 0 | 0.00% |
| American Indian and Alaska Native alone | 11 | 0.78% |
| Asian alone | 0 | 0.00% |
| Native Hawaiian and Other Pacific Islander alone | 0 | 0.00% |
| Some Other Race alone | 23 | 1.63% |
| Two or More Races | 10 | 0.71% |
| Not Hispanic or Latino | 1,290 | 91.62% |
| White alone | 1,209 | 85.87% |
| Black or African American alone | 13 | 0.92% |
| American Indian and Alaska Native alone | 21 | 1.49% |
| Asian alone | 11 | 0.78% |
| Native Hawaiian and Other Pacific Islander alone | 3 | 0.21% |
| Some Other Race alone | 4 | 0.28% |
| Two or More Races | 29 | 2.06% |
Relationship in Janesville
*Base on 2010 Data
| Total | 1,408 | 100.00% |
| In households | 1,400 | 99.43% |
| Householder | 535 | 38.00% |
| Spouse | 361 | 25.64% |
| Child | 405 | 28.76% |
| Own child under 18 years | 317 | 22.51% |
| Other relatives | 48 | 3.41% |
| Under 18 years | 18 | 1.28% |
| 65 years and over | 9 | 0.64% |
| Nonrelatives | 51 | 3.62% |
| Under 18 years | 9 | 0.64% |
| 65 years and over | 9 | 0.64% |
| Unmarried partner | 25 | 1.78% |
| In group quarters | 8 | 0.57% |
| Institutionalized population | 0 | 0.00% |
| Male | 0 | 0.00% |
| Female | 0 | 0.00% |
| Noninstitutionalized population | 8 | 0.57% |
| Male | 7 | 0.50% |
| Female | 1 | 0.07% |
Households by Type in Janesville
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 535 | 100.00% |
| Family households (families) | 415 | 77.57% |
| With own children under 18 years | 158 | 29.53% |
| Husband-wife family | 361 | 67.48% |
| With own children under 18 years | 129 | 24.11% |
| Male householder, no wife present | 22 | 4.11% |
| With own children under 18 years | 11 | 2.06% |
| Female householder, no husband present | 32 | 5.98% |
| With own children under 18 years | 18 | 3.36% |
| Nonfamily households | 120 | 22.43% |
| Householder living alone | 96 | 17.94% |
| Male | 58 | 10.84% |
| 65 years and over | 16 | 2.99% |
| Female | 38 | 7.10% |
| 65 years and over | 15 | 2.80% |
Households with individuals under 18 years in Janesville
*Base on 2010 Data
| Total | 166 | 31.03% |
Households with individuals under 65 years in Janesville
*Base on 2010 Data
| Total | 135 | 25.23% |
Average Household Size in Janesville
*Base on 2010 Data
| Average household size | 3 | % |
Average Family Size in Janesville
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Janesville
*Base on 2010 Data
| Total | 615 | 100.00% |
| Occupied housing units | 535 | 86.99% |
| Vacant housing units | 80 | 13.01% |
| For rent | 8 | 1.30% |
| Rented, not occupied | 0 | 0.00% |
| For sale only | 12 | 1.95% |
| Sold, not occupied | 1 | 0.16% |
| For seasonal, recreational, or occasional use | 23 | 3.74% |
| All other vacants | 36 | 5.85% |
Homeowner Vacancy Rate in Janesville
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 2.50% |
Rental Vacancy Rate in Janesville
*Base on 2010 Data
| Rental vacancy rate (percent) | 9.60% |
Housing Tenure(Occupied housing units) in Janesville
*Base on 2010 Data
| Total | 535 | 100.00% |
| Owner-occupied housing units | 460 | 85.98% |
| Renter-occupied housing units | 75 | 14.02% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Janesville
*Base on 2010 Data
| Owner-occupied housing units | 1,206 | 86.14% |
| Renter-occupied housing units | 194 | 13.86% |
Average Household Size of Occupied Housing Units by Tenure in Janesville
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 3 | % |