Janesville, WI

Janesville is home to roughly 65,813 residents. Janesville was founded in 1853 and sits in Rock County. The median age is 40 and the median household income is $71,664. Homes carry a median value of $209,700, and about 67% of residents own where they live. White residents make up the largest share of the population (85.3%). Around 27% of adults hold a bachelor's degree or higher, and the typical commute runs about 21 minutes.

Source: U.S. Census Bureau, American Community Survey (5-year).

Source: U.S. Census Bureau, American Community Survey (5-year).

Area-level figures. Source: U.S. Census Bureau, ACS (5-year). Parcel-level records coming next.

Janesville has 26 public schools — 14 elementary, 3 middle, 5 high.

Public schools + grade-8 proficiency. Source: U.S. Dept. of Education (NCES directory + EDFacts assessments), via Urban Institute.

Rate per 100,000 residents/year, Janesville Police Department, 2023. Source: FBI UCR/NIBRS (Crime Data Explorer).

Toxic-release sites and regulated facilities in and around Janesville.

Data source being added: U.S. EPA — Toxics Release Inventory (public). We show real, sourced figures only — never estimates.

County-level natural-hazard risk. Source: FEMA National Risk Index.

Janesville is in Rock County — see county-wide risk, demographics, and registry.

Janesville was founded in 1853 and sits in Rock County. Elevation ~260 m.

Most-recorded names in Rock County booking & incarceration records:

Names with the most public booking/incarceration records in the county. Source: state & county correctional rosters (first-party).