Biohazard and Pathogen Disinfection in Sullivan, WI

Sullivan is a village in Jefferson County, Wisconsin, located within the Town of Sullivan, from which it took its name.

Sullivan was formerly known as Winfield before adopting the name Sullivan.

A post office called Sullivan has been in operation since 1846, and the village was incorporated in 1915.

Sullivan had 651 residents at the 2020 census, down slightly from 669 in 2010, though the village jumped from 432 people in 1990 to 688 in 2000 as the area between Madison and Milwaukee filled in.

Sullivan's 669 residents lived in 304 households at the 2010 census, with an average household size of 2.20 people.

Sullivan is best known across southern Wisconsin as the namesake of the National Weather Service's Milwaukee/Sullivan forecast office (MKX), which issues forecasts and warnings for southeastern Wisconsin, though the office itself sits just outside the village with a Dousman mailing address.

Because of the weather office, the Sullivan area has an official NOAA climate station (Sullivan 3SE) whose records since 1995 include a record high of 106 degrees Fahrenheit and a record low of minus 30 degrees.

Sullivan sits about 30 miles west of Milwaukee and 40 miles east of Madison, roughly 6 miles south of Interstate 94, at the crossroads of Highways 18, F and E.

Sullivan Elementary School, a few blocks from Main Street, is part of the School District of Jefferson.