Town of Sullivan, Jefferson County, Wisconsin
The Town of Sullivan is a town in Jefferson County, Wisconsin. About 2,029 people live there (2020–2024 estimate). It covers 34.9 sq mi (90.3 km²) of land and uses Central Time. It has its own local government.
- Population, 2020–2024 estimate
- 2,029 ± 298
- County
- Jefferson County
- School district
- Jefferson School District
- Land area
- 34.9 sq mi (90.3 km²)
- Type
- TownIts own local government
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $85,833 ± $8,331
- Median home value
- $307,300 ± $38,277
- Water area
- 0.79 sq mi (2.04 km²)
- State
- Wisconsin
- Census code (GEOID)
- 5505578200
- Coordinates (central point)
- 42.971254, -88.612663
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.
Census place in the Town of Sullivan
- Rome (CDP)620 people
This place’s central point lies inside the Town of Sullivan. A place can reach across the line, and its government, if it has one, can be separate from the town’s.
Bordering areas, nearest first
- Sullivan (village)3.0 mi north
- Town of Palmyra5.8 mi south
- Town of Hebron5.9 mi southwest
- Town of Ottawa, Waukesha County6.2 mi east
- Town of Concord6.6 mi north
- Town of Jefferson8.8 mi west
These towns, townships, cities and boroughs share a boundary with the Town of Sullivan. Distances are straight lines between central points, not driving distances.
Other towns in Jefferson County, largest first
- Town of Ixonia5,078 people
- Town of Koshkonong3,748 people
- Town of Oakland3,222 people
- Town of Lake Mills2,317 people
- Town of Jefferson1,916 people
- Town of Watertown1,850 people
- Town of Concord1,744 people
- Town of Farmington1,309 people
- Town of Milford1,164 people
- Town of Aztalan1,155 people
- Town of Hebron1,153 people
- Town of Palmyra1,146 people
All 15
- Town of Cold Spring1,019 people
- Town of Waterloo934 people
- Town of Sumner824 people
People counts are American Community Survey 2020–2024 5-year estimates. See Jefferson County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in the Town of Sullivan
- Longest day
- 15 hours 22 minutes around June 21
- Shortest day
- 9 hours around December 21
- Earliest sunrise
- 5:14 AM around June 15
- Latest sunrise
- 7:35 AM the day before clocks go back in November
- Earliest sunset
- 4:19 PM around December 9
- Latest sunset
- 8:37 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 | 7:22 AM | 4:45 PM | 9 h 23 min |
| Feb 15 | 6:52 AM | 5:25 PM | 10 h 33 min |
| Mar 15 | 7:06 AM | 7:00 PM | 11 h 54 min |
| Apr 15 | 6:12 AM | 7:36 PM | 13 h 24 min |
| May 15 | 5:31 AM | 8:10 PM | 14 h 39 min |
| Jun 15 | 5:14 AM | 8:35 PM | 15 h 21 min |
| Jul 15 | 5:28 AM | 8:31 PM | 15 h 3 min |
| Aug 15 | 6:00 AM | 7:56 PM | 13 h 56 min |
| Sep 15 | 6:33 AM | 7:04 PM | 12 h 31 min |
| Oct 15 | 7:07 AM | 6:11 PM | 11 h 4 min |
| Nov 15 | 6:46 AM | 4:30 PM | 9 h 44 min |
| Dec 15 | 7:18 AM | 4:20 PM | 9 h 2 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 Jefferson County or the local office.
Find the township or town where you are now or find your county.