
Janesville
- County:
- Waseca County
- County Seat:
- No
- Area (mi²):
- 1.537
- State:
- Minnesota
Janesville is a city located in Waseca County, Minnesota. Janesville has a 2025 population of 2,499. Janesville is currently growing at a rate of 0.64% annually and its population has increased by 3.22% since the most recent census, which recorded a population of 2,421 in 2020.
The average household income in Janesville is $86,647 with a poverty rate of 4.22%. The median age in Janesville is 37.6 years: 34.8 years for males, and 39.9 years for females.