Janesville city, Iowa demographics
Population: 1,059
Median age: 40.9
Median household income: 88,750
Janesville is a city in Black Hawk County and Bremer County, Iowa, United States.
Demographics, population, home values, social and economic characteristics of Janesville city, IA.
Population
| 2021 | 1,059 |
| 2020 | 1,051 |
| 2019 | 981 |
| 2018 | 956 |
| 2017 | 863 |
| 2016 | 795 |
| 2015 | 880 |
| 2014 | 888 |
| 2013 | 949 |
| 2012 | 986 |
| 2011 | 1,011 |
| 2010 | 942 |
| 2009 | 906 |
Census data for Janesville city, Iowa
Demographic and housing estimates in Janesville city, Iowa
| Total population | 1,059 |
| Male | 556 |
| Female | 503 |
| Total population | 1,059 |
| Under 5 years | 75 |
| 5 to 9 years | 83 |
| 10 to 14 years | 63 |
| 15 to 19 years | 68 |
| 20 to 24 years | 14 |
| 25 to 34 years | 137 |
| 35 to 44 years | 151 |
| 45 to 54 years | 125 |
| 55 to 59 years | 141 |
| 60 to 64 years | 41 |
| 65 to 74 years | 107 |
| 75 to 84 years | 44 |
| 85 years and over | 10 |
| Median age (years) | 40.9 |
| Under 18 years | 283 |
| 16 years and over | 825 |
| 18 years and over | 776 |
| 21 years and over | 759 |
| 62 years and over | 188 |
| 65 years and over | 161 |
| Total population | 1,059 |
| One race | 1,055 |
| White | 1,055 |
| Black or African American | 0 |
| American Indian and Alaska Native | 0 |
| Asian | 0 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 0 |
| Two or more races | 4 |
| Citizen, VOTING AGE 18 and over population | 770 |
| Male Citizen, VOTING AGE 18 and over population | 409 |
| Female Citizen, VOTING AGE 18 and over population | 361 |
Social characteristics in Janesville city, Iowa
| Total households | 428 |
| Family households (families) | 284 |
| Married-couple family | 18 |
| Male householder, no wife present, family | 70 |
| Female householder, no husband present, family | 62 |
| Nonfamily households | 56 |
| Average household size | 115 |
| Average family size | 2.47 |
Economic characteristics in Janesville city, Iowa
| Total households | 428 |
| Less than $10,000 | 10 |
| $10,000 to $14,999 | 11 |
| $15,000 to $24,999 | 25 |
| $25,000 to $34,999 | 26 |
| $35,000 to $49,999 | 42 |
| $50,000 to $74,999 | 74 |
| $75,000 to $99,999 | 57 |
| $100,000 to $149,999 | 122 |
| $150,000 to $199,999 | 61 |
| $200,000 or more | 0 |
| Median household income (dollars) | 88,750 |
Housing characteristics in Janesville city, Iowa
| Total housing units | 478 |
| Occupied housing units | 428 |
| Vacant housing units | 50 |
| Total housing units | 478 |
| 1-unit, detached | 428 |
| 1-unit, attached | 20 |
| 2 units | 3 |
| 3 or 4 units | 18 |
| 5 to 9 units | 2 |
| 10 to 19 units | 0 |
| 20 or more units | 0 |
| Mobile home | 7 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 478 |
| Built 2014 or later | 0 |
| Built 2010 to 2013 | 57 |
| Built 2000 to 2009 | 68 |
| Built 1990 to 1999 | 36 |
| Built 1980 to 1989 | 12 |
| Built 1970 to 1979 | 76 |
| Built 1960 to 1969 | 43 |
| Built 1950 to 1959 | 60 |
| Built 1940 to 1949 | 32 |
| Built 1939 or earlier | 94 |
| Total housing units | 478 |
| 1 room | 0 |
| 2 rooms | 4 |
| 3 rooms | 17 |
| 4 rooms | 58 |
| 5 rooms | 87 |
| 6 rooms | 99 |
| 7 rooms | 63 |
| 8 rooms | 37 |
| 9 rooms or more | 113 |
| Median rooms | 6.2 |
| Total housing units | 478 |
| No bedroom | 0 |
| 1 bedroom | 24 |
| 2 bedrooms | 112 |
| 3 bedrooms | 219 |
| 4 bedrooms | 88 |
| 5 or more bedrooms | 35 |
| Occupied housing units | 428 |
| Owner-occupied | 381 |
| Renter-occupied | 47 |
| Average household size of owner-occupied unit | 2.62 |
| Average household size of renter-occupied unit | 1.30 |
| Occupied housing units | 428 |
| Moved in 2017 or later | 7 |
| Moved in 2015 to 2016 | 80 |
| Moved in 2010 to 2014 | 113 |
| Moved in 2000 to 2009 | 70 |
| Moved in 1990 to 1999 | 88 |
| Moved in 1989 and earlier | 70 |
| Owner-occupied units | 381 |
| Less than $50,000 | 12 |
| $50,000 to $99,999 | 39 |
| $100,000 to $149,999 | 68 |
| $150,000 to $199,999 | 64 |
| $200,000 to $299,999 | 173 |
| $300,000 to $499,999 | 17 |
| $500,000 to $999,999 | 8 |
| $1,000,000 or more | 0 |
| Median (dollars) | 203,400 |
| Owner-occupied units | 381 |
| Housing units with a mortgage | 267 |
| Housing units without a mortgage | 114 |
| Occupied units paying rent | 44 |
| Less than $500 | 18 |
| $500 to $999 | 11 |
| $1,000 to $1,499 | 15 |
| $1,500 to $1,999 | 0 |
| $2,000 to $2,499 | 0 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 0 |
| Median (dollars) | 575 |
| No rent paid | 3 |
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