Population 70,815 · Census ACS 2020–24
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Population and households in Janesville
Household size in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 2.53 | 2.45 | 2.68 |
| 2010–14 | 2.50 | 2.47 | 2.73 |
| 2015–19 | 2.41 | 2.43 | 2.71 |
| 2020–24 | 2.36 | 2.40 | 2.65 |
| Change | −0.17 | −0.06 | −0.03 |
Households in Janesville are small: just 2.36 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.53 in 2006–10, a much bigger shift than nationally.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 37.8 | 38.8 | 37.7 |
| 2010–14 | 38.5 | 39.9 | 38.6 |
| 2015–19 | 41.2 | 40.9 | 39.6 |
| 2020–24 | 41.5 | 41.4 | 40.1 |
| Change | +3.7 | +2.6 | +2.3 |
Half of the people in Janesville are younger than 41.5 and half are older, close to the national median of 40.1. The median age has climbed from 37.8 in 2006–10, mirroring the country. The youngest areas are in the center, the oldest in the northwest.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 13.2% | 10.4% | 12.3% |
| 2010–14 | 13.4% | 10.5% | 12.3% |
| 2015–19 | 12.2% | 10.0% | 11.6% |
| 2020–24 | 11.3% | 9.8% | 11.6% |
| Change | −1.9 pts | −0.6 pts | −0.6 pts |
Single parents head nearly one in eight households in Janesville (11.3%), close to the national share of 11.6%. Single parents are more common here than in Wisconsin overall (9.8%). The single-parent share is down 1.9 points from 2006–10, a much bigger shift than nationally.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Janesville
Renters in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 27.8% | 30.5% | 33.3% |
| 2010–14 | 31.6% | 32.3% | 35.6% |
| 2015–19 | 32.9% | 33.0% | 36.0% |
| 2020–24 | 31.2% | 32.2% | 34.8% |
| Change | +3.4 pts | +1.6 pts | +1.5 pts |
Most households in Janesville own their homes; 31.2% rent, a little below the national share of 34.8%. About four in ten owners (39.8%) have paid off their mortgages, about the same as nationally. Renting is most common in the center and least common in the northwest. Since 2006–10, the renter share has risen 3.4 points, mirroring the country.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 8.4% | 10.5% | 11.4% |
| 2010–14 | 7.3% | 10.6% | 11.4% |
| 2015–19 | 5.2% | 10.1% | 11.1% |
| 2020–24 | 5.2% | 9.2% | 9.6% |
| Change | −3.2 pts | −1.3 pts | −1.8 pts |
Empty homes are scarce in Janesville: just 5.2% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Vacancy is down 3.2 points from 2006–10, in line with the national trend.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 1970 | 1970 | 1974 |
| 2010–14 | 1970 | 1971 | 1975 |
| 2015–19 | 1971 | 1972 | 1977 |
| 2020–24 | 1972 | 1974 | 1980 |
| Change | +2 | +5 | +6 |
Housing in Janesville leans older: the median home dates to 1972, against 1980 nationally. The picture is much the same across Wisconsin. Newer construction is concentrated in the northeast, while the center has the oldest housing.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | $763 | $758 | $965 |
| 2010–14 | $793 | $821 | $1,040 |
| 2015–19 | $920 | $904 | $1,213 |
| 2020–24 | $1,143 | $1,139 | $1,571 |
| Change | +$380 | +$380 | +$606 |
The median renter in Janesville pays $1,143 a month for rent and utilities, well below the national median of $1,571. Rents are up $380 a month from 2006–10, a 50% rise, a slower climb than the nation's. Rent takes 27.5% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the southwest; the most affordable are in the center.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Janesville
Bachelor's degrees in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 21.7% | 26.5% | 28.4% |
| 2010–14 | 21.5% | 28.0% | 29.6% |
| 2015–19 | 24.0% | 30.4% | 32.1% |
| 2020–24 | 27.3% | 33.6% | 35.6% |
| Change | +5.6 pts | +7.0 pts | +7.2 pts |
College degrees are less common in Janesville than nationally: 27.3% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree is up 5.6 points from 2006–10, in line with the national trend. College graduates are most concentrated in the northwest and least in the south.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 89.1% | 89.5% | 84.9% |
| 2010–14 | 91.0% | 90.7% | 86.1% |
| 2015–19 | 92.4% | 92.1% | 87.7% |
| 2020–24 | 94.3% | 93.3% | 89.3% |
| Change | +5.2 pts | +3.8 pts | +4.3 pts |
High school completion is high in Janesville: 94.3% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The picture is much the same across Wisconsin. The share with a diploma is up 5.2 points from 2006–10, in line with the national trend.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Janesville
| Period | Janesville | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 8.7% | 6.7% | 8.1% |
| 2010–14 | 8.9% | 7.3% | 9.4% |
| 2015–19 | 4.6% | 3.7% | 5.6% |
| 2020–24 | 3.4% | 3.3% | 5.4% |
| Change | −5.3 pts | −3.4 pts | −2.7 pts |
Unemployment in Janesville runs below the national rate: 3.4% of the labor force was out of work and looking, against 5.4% nationally. Unemployment has fallen 5.3 points since 2006–10, mirroring the country. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Janesville compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Janesville | 2.36 | 41.5 | 11.3% | 31.2% | 5.2% | 1972 | $1,143 | 27.3% | 94.3% | 3.4% |
| Afton | 2.55 | 41.6 | 12.9% | 14.2% | 8.6% | 1987 | $929 | 22.2% | 95.7% | 4.2% |
| Milton | 2.50 | 42.3 | 7.5% | 15.9% | 7.1% | 1980 | $1,010 | 32.6% | 96.6% | 1.6% |
| Milton Junction | 2.30 | 42.3 | 12.7% | 12.1% | 4.7% | 1974 | $1,009 | 28.6% | 96.8% | 1.0% |
| Garden Village | 2.53 | 39.9 | 14.3% | 28.3% | 2.5% | 1981 | $947 | 30.1% | 95.4% | 6.5% |
| Hanover | 2.48 | 43.8 | 6.7% | 11.7% | 4.3% | 1970 | $1,030 | 25.8% | 92.9% | 2.5% |
| Avalon | 2.37 | 51.1 | 3.0% | 8.0% | 8.0% | 1949 | $1,126 | 26.9% | 96.0% | 5.4% |
| Indianford | 2.62 | 48.2 | 6.6% | 2.6% | 14.2% | 1979 | $1,065 | 27.6% | 97.1% | 0.1% |
| Newville | 2.29 | 48.3 | 12.6% | 5.6% | 42.3% | 1989 | $1,140 | 36.5% | 98.6% | 7.0% |
| Tiffany | 2.34 | 45.0 | 13.4% | 29.4% | 3.3% | 1978 | $1,186 | 33.9% | 95.5% | 3.4% |
| Johnstown | 2.30 | 53.2 | 2.8% | 11.1% | 9.6% | 1960 | $1,070 | 28.3% | 94.2% | 3.7% |
All figures 2020–24.
Cities with similar populations: San Francisco, CA · Schaumburg, IL · Santa Monica, CA · Santa Barbara, CA · San Angelo, TX · Santa Clara, CA · Santa Ana, CA · Santa Clarita, CA · Redlands, CA · Rocklin, CA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Janesville. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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