Town of Janesville, Rock County, Wisconsin
The Town of Janesville is a town in Rock County, Wisconsin. About 3,678 people live there (2020–2024 estimate). It covers 26.8 sq mi (69.4 km²) of land and uses Central Time. It has its own local government.
- Population, 2020–2024 estimate
- 3,678 ± 15
- County
- Rock County
- School district
- Janesville School District
- Land area
- 26.8 sq mi (69.4 km²)
- Type
- TownIts own local government
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $102,660 ± $24,745
- Median home value
- $369,000 ± $29,892
- Water area
- 0.42 sq mi (1.09 km²)
- State
- Wisconsin
- Census code (GEOID)
- 5510537850
- Coordinates (central point)
- 42.719129, -89.082569
These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Bordering areas, nearest first
- Janesville (city)4.3 mi southeast
- Town of Center5.2 mi west
- Town of Fulton5.2 mi north
- Town of Rock6.4 mi south
- Town of Harmony7.1 mi east
These towns, townships, cities and boroughs share a boundary with the Town of Janesville. Distances are straight lines between central points, not driving distances.
Other towns in Rock County, largest first
- Town of Beloit7,799 people
- Town of Fulton3,636 people
- Town of Milton3,103 people
- Town of Rock2,986 people
- Town of Turtle2,768 people
- Town of Harmony2,550 people
- Town of Union2,235 people
- Town of Newark1,377 people
- Town of Lima1,338 people
- Town of Center1,088 people
- Town of Clinton1,041 people
- Town of Porter961 people
All 19
- Town of Plymouth907 people
- Town of Bradford897 people
- Town of Magnolia864 people
- Town of La Prairie839 people
- Town of Johnstown638 people
- Town of Avon634 people
- Town of Spring Valley633 people
People counts are American Community Survey 2020–2024 5-year estimates. See Rock County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in the Town of Janesville
- Longest day
- 15 hours 20 minutes around June 21
- Shortest day
- 9 hours 2 minutes around December 21
- Earliest sunrise
- 5:17 AM around June 15
- Latest sunrise
- 7:36 AM the day before clocks go back in November
- Earliest sunset
- 4:22 PM around December 9
- Latest sunset
- 8:38 PM around June 27
Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 7:23 AM | 4:47 PM | 9 h 24 min |
| Feb 15 | 6:53 AM | 5:27 PM | 10 h 34 min |
| Mar 15 | 7:08 AM | 7:02 PM | 11 h 54 min |
| Apr 15 | 6:15 AM | 7:38 PM | 13 h 23 min |
| May 15 | 5:34 AM | 8:11 PM | 14 h 37 min |
| Jun 15 | 5:17 AM | 8:36 PM | 15 h 19 min |
| Jul 15 | 5:31 AM | 8:32 PM | 15 h 1 min |
| Aug 15 | 6:02 AM | 7:58 PM | 13 h 56 min |
| Sep 15 | 6:35 AM | 7:06 PM | 12 h 31 min |
| Oct 15 | 7:09 AM | 6:14 PM | 11 h 5 min |
| Nov 15 | 6:47 AM | 4:33 PM | 9 h 46 min |
| Dec 15 | 7:19 AM | 4:23 PM | 9 h 4 min |
Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.
Before using this answer on a form
A town line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Rock County or the local office.
Find the township or town where you are now or find your county.