Sumner, Jefferson County, Wisconsin

Town of Sumner, Wisconsin
Town hall in Busseyville
Location of the Town of Sumner, Wisconsin
Coordinates: 42°54′12″N 88°58′8″W / 42.90333°N 88.96889°W / 42.90333; -88.96889
Country United States
State Wisconsin
CountyJefferson
Area
  Total
31.3 sq mi (81.0 km2)
  Land16.3 sq mi (42.2 km2)
  Water15.0 sq mi (38.9 km2)
Elevation
774 ft (236 m)
Population
 (2010)
  Total
832
  Density27/sq mi (10/km2)
Time zoneUTC-6 (Central (CST))
  Summer (DST)UTC-5 (CDT)
FIPS code55-78475
GNIS feature ID1584252
Websitewww.townofsumner.com

Sumner is a town in Jefferson County, Wisconsin, United States. The population was 832 at the 2010 census. The census-designated place of Lake Koshkonong and the unincorporated communities of Busseyville, Carcajou, Glenn Oaks Beach, Koshkonong Manor, and North Shore are located within the town. The community of Blackhawk Island is located partially in the town.