City profile
Janesville, WI
Rock County · Population 66,030
Janesville is a city in Rock County, WI with about 66,030 residents and a typical home value near $223,000. It is 33 miles from Madison, WI, which shapes its climate, healthcare access and amenities.
Climate
Climate type
Four seasons
Winter avg
21°F
Summer avg
72°F
Sunny days / yr
190
Home prices & cost of living
Median home price
$223,400
Typical monthly housing
$1,495
Cost of living (100 = U.S.)
87
Taxes
- Property tax
- 1.51%
- State income tax (top)
- 7.65%
- Social Security
- Not taxed
- Pensions
- Partly exempt
- Sales tax (state + avg. local)
- 5.72%
FEMA natural hazard risk
Relatively Moderate · county score 86/100
Top hazards: Hail, Tornado, Cold wave
Nearest major airport
59 mi to General Mitchell International Airport (MKE)
Political lean (2024 county vote)
Competitive / purple · 53% Democratic / 46% Republican
Community
Population
66,030
Black population
3.1%
County
Rock County
Detailed crime figures are available for our 201 hand-researched cities.
2025–2026 trends
2026 market trends
- ▸Home prices are still rising in 2026 — good for long-term value, less room to negotiate
- ▸Climate/cost risks to check: winter storms
Highlights
- About 66,030 residents
- Typical home value about $223,000
- 33 miles from Madison, WI
Trade-offs
- Scores for this place are estimated from Census data and the nearest major city
Figures are estimates from public sources (see How we match). Verify before making decisions.