Population by Age in Janesville City
*Base on 2010 Data
| Total population | 930 | 100.00% |
| Under 5 years | 72 | 7.74% |
| 5 to 9 years | 69 | 7.42% |
| 10 to 14 years | 52 | 5.59% |
| 15 to 19 years | 45 | 4.84% |
| 20 to 24 years | 47 | 5.05% |
| 25 to 29 years | 65 | 6.99% |
| 30 to 34 years | 59 | 6.34% |
| 35 to 39 years | 55 | 5.91% |
| 40 to 44 years | 59 | 6.34% |
| 45 to 49 years | 69 | 7.42% |
| 50 to 54 years | 66 | 7.10% |
| 55 to 59 years | 49 | 5.27% |
| 60 to 64 years | 51 | 5.48% |
| 65 to 69 years | 42 | 4.52% |
| 70 to 74 years | 52 | 5.59% |
| 75 to 79 years | 29 | 3.12% |
| 80 to 84 years | 26 | 2.80% |
| 85 years and over | 23 | 2.47% |
Male Population in Janesville City
*Base on 2010 Data
| Male population | 461 | 49.57% |
| Under 5 years | 37 | 3.98% |
| 5 to 9 years | 35 | 3.76% |
| 10 to 14 years | 23 | 2.47% |
| 15 to 19 years | 23 | 2.47% |
| 20 to 24 years | 21 | 2.26% |
| 25 to 29 years | 34 | 3.66% |
| 30 to 34 years | 30 | 3.23% |
| 35 to 39 years | 28 | 3.01% |
| 40 to 44 years | 32 | 3.44% |
| 45 to 49 years | 31 | 3.33% |
| 50 to 54 years | 38 | 4.09% |
| 55 to 59 years | 30 | 3.23% |
| 60 to 64 years | 24 | 2.58% |
| 65 to 69 years | 19 | 2.04% |
| 70 to 74 years | 24 | 2.58% |
| 75 to 79 years | 13 | 1.40% |
| 80 to 84 years | 10 | 1.08% |
| 85 years and over | 9 | 0.97% |
Female Population in Janesville City
*Base on 2010 Data
| Female population | 469 | 50.43% |
| Under 5 years | 35 | 3.76% |
| 5 to 9 years | 34 | 3.66% |
| 10 to 14 years | 29 | 3.12% |
| 15 to 19 years | 22 | 2.37% |
| 20 to 24 years | 26 | 2.80% |
| 25 to 29 years | 31 | 3.33% |
| 30 to 34 years | 29 | 3.12% |
| 35 to 39 years | 27 | 2.90% |
| 40 to 44 years | 27 | 2.90% |
| 45 to 49 years | 38 | 4.09% |
| 50 to 54 years | 28 | 3.01% |
| 55 to 59 years | 19 | 2.04% |
| 60 to 64 years | 27 | 2.90% |
| 65 to 69 years | 23 | 2.47% |
| 70 to 74 years | 28 | 3.01% |
| 75 to 79 years | 16 | 1.72% |
| 80 to 84 years | 16 | 1.72% |
| 85 years and over | 14 | 1.51% |
Median Age in Janesville City
*Base on 2010 Data
| Both | 40.20% | |
| Male | 39.90% | |
| Female | 40.50% |
Race in Janesville City
*Base on 2010 Data
| Total | 930 | 100.00% |
| Population of one race | 923 | 99.25% |
| White | 915 | 98.39% |
| Black or African American | 6 | 0.65% |
| American Indian and Alaska Native | 0 | 0.00% |
| Asian | 2 | 0.22% |
| Asian Indian | 0 | 0.00% |
| Chinese | 0 | 0.00% |
| Filipino | 0 | 0.00% |
| Japanese | 0 | 0.00% |
| Korean | 1 | 0.11% |
| Vietnamese | 0 | 0.00% |
| Other Asian | 1 | 0.11% |
| Native Hawaiian and Other Pacific Islander | 0 | 0.00% |
| Native Hawaiian | 0 | 0.00% |
| Guamanian or Chamorro | 0 | 0.00% |
| Samoan | 0 | 0.00% |
| Other Pacific Islander | 0 | 0.00% |
| Some Other Race | 0 | 0.00% |
| Population of Two or More Races | 7 | 0.75% |
| White; American Indian and Alaska Native | 0 | 0.00% |
| White; Asian | 0 | 0.00% |
| White; Black or African American | 4 | 0.43% |
| White; Some Other Race | 3 | 0.32% |
The Population 16 Years in Janesville City
*Base on 2010 Data
| Total | 728 | 100.00% |
| Male | 360 | 49.45% |
| Female | 368 | 50.55% |
The Population 18 Years in Janesville City
*Base on 2010 Data
| Total | 705 | 100.00% |
| Male | 347 | 49.22% |
| Female | 358 | 50.78% |
The Population 21 Years in Janesville City
*Base on 2010 Data
| Total | 685 | 100.00% |
| Male | 341 | 49.78% |
| Female | 344 | 50.22% |
The Population 62 Years in Janesville City
*Base on 2010 Data
| Total | 204 | 100.00% |
| Male | 88 | 43.14% |
| Female | 116 | 56.86% |
The Population 65 Years in Janesville City
*Base on 2010 Data
| Total | 172 | 100.00% |
| Male | 75 | 43.60% |
| Female | 97 | 56.40% |
Race (total races tallied) in Janesville City
*Base on 2010 Data
| White alone or in combination with one or more other races | 922 | 98.40% |
| Black or African American alone or in combination with one or more other races | 10 | 1.07% |
| American Indian and Alaska Native alone or in combination with one or more other races | 0 | 0.00% |
| Asian alone or in combination with one or more other races | 2 | 0.21% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 0 | 0.00% |
| Some Other Race alone or in combination with one or more other races | 3 | 0.32% |
Hispanic or Latino by Specific Origin in Janesville City
*Base on 2010 Data
| Total | 930 | 100.00% |
| Hispanic or Latino (of any race) | 3 | 0.32% |
| Mexican | 2 | 0.22% |
| Puerto Rican | 0 | 0.00% |
| Cuban | 0 | 0.00% |
| Other Hispanic or Latino | 1 | 0.11% |
| Not Hispanic or Latino | 927 | 99.68% |
Hispanic or Latino and Race in Janesville City
*Base on 2010 Data
| Total | 930 | 100.00% |
| Hispanic or Latino | 3 | 0.32% |
| White alone | 3 | 0.32% |
| Black or African American alone | 0 | 0.00% |
| American Indian and Alaska Native alone | 0 | 0.00% |
| Asian alone | 0 | 0.00% |
| Native Hawaiian and Other Pacific Islander alone | 0 | 0.00% |
| Some Other Race alone | 0 | 0.00% |
| Two or More Races | 0 | 0.00% |
| Not Hispanic or Latino | 927 | 99.68% |
| White alone | 912 | 98.06% |
| Black or African American alone | 6 | 0.65% |
| American Indian and Alaska Native alone | 0 | 0.00% |
| Asian alone | 2 | 0.22% |
| Native Hawaiian and Other Pacific Islander alone | 0 | 0.00% |
| Some Other Race alone | 0 | 0.00% |
| Two or More Races | 7 | 0.75% |
Relationship in Janesville City
*Base on 2010 Data
| Total | 930 | 100.00% |
| In households | 930 | 100.00% |
| Householder | 398 | 42.80% |
| Spouse | 226 | 24.30% |
| Child | 259 | 27.85% |
| Own child under 18 years | 218 | 23.44% |
| Other relatives | 12 | 1.29% |
| Under 18 years | 4 | 0.43% |
| 65 years and over | 1 | 0.11% |
| Nonrelatives | 35 | 3.76% |
| Under 18 years | 3 | 0.32% |
| 65 years and over | 1 | 0.11% |
| Unmarried partner | 22 | 2.37% |
| In group quarters | 0 | 0.00% |
| Institutionalized population | 0 | 0.00% |
| Male | 0 | 0.00% |
| Female | 0 | 0.00% |
| Noninstitutionalized population | 0 | 0.00% |
| Male | 0 | 0.00% |
| Female | 0 | 0.00% |
Households by Type in Janesville City
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 398 | 100.00% |
| Family households (families) | 262 | 65.83% |
| With own children under 18 years | 112 | 28.14% |
| Husband-wife family | 226 | 56.78% |
| With own children under 18 years | 95 | 23.87% |
| Male householder, no wife present | 11 | 2.76% |
| With own children under 18 years | 5 | 1.26% |
| Female householder, no husband present | 25 | 6.28% |
| With own children under 18 years | 12 | 3.02% |
| Nonfamily households | 136 | 34.17% |
| Householder living alone | 112 | 28.14% |
| Male | 55 | 13.82% |
| 65 years and over | 12 | 3.02% |
| Female | 57 | 14.32% |
| 65 years and over | 42 | 10.55% |
Households with individuals under 18 years in Janesville City
*Base on 2010 Data
| Total | 116 | 29.15% |
Households with individuals under 65 years in Janesville City
*Base on 2010 Data
| Total | 126 | 31.66% |
Average Household Size in Janesville City
*Base on 2010 Data
| Average household size | 2 | % |
Average Family Size in Janesville City
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Janesville City
*Base on 2010 Data
| Total | 409 | 100.00% |
| Occupied housing units | 398 | 97.31% |
| Vacant housing units | 11 | 2.69% |
| For rent | 2 | 0.49% |
| Rented, not occupied | 0 | 0.00% |
| For sale only | 2 | 0.49% |
| Sold, not occupied | 1 | 0.24% |
| For seasonal, recreational, or occasional use | 0 | 0.00% |
| All other vacants | 6 | 1.47% |
Homeowner Vacancy Rate in Janesville City
*Base on 2010 Data
| Homeowner vacancy rate (percent) | .60% |
Rental Vacancy Rate in Janesville City
*Base on 2010 Data
| Rental vacancy rate (percent) | 2.60% |
Housing Tenure(Occupied housing units) in Janesville City
*Base on 2010 Data
| Total | 398 | 100.00% |
| Owner-occupied housing units | 324 | 81.41% |
| Renter-occupied housing units | 74 | 18.59% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Janesville City
*Base on 2010 Data
| Owner-occupied housing units | 797 | 85.70% |
| Renter-occupied housing units | 133 | 14.30% |
Average Household Size of Occupied Housing Units by Tenure in Janesville City
*Base on 2010 Data
| Owner occupied | 2 | % |
| Renter occupied | 2 | % |