Winterset is a city in and the county seat of Madison County, Iowa. The population was 5,353 at the time of the 2020 census.
Winterset is part of the Des Moines metropolitan area. It is the birthplace of actor John Wayne.
Winterset was platted during a cool spell in the summer of 1849. The name was originally to be "Summerset", but the unseasonable coldness made the commissioners reverse this to "Winterset".
On March 5, 2022, a low-end EF4 tornado struck the areas just outside the city, killing six people.
Winterset is located in central Madison County at the intersection of US Route 169 and Iowa State Highway 92. Middle River flows past the south side of the city. It is approximately 30 miles southwest of the state capital of Des Moines.
According to the United States Census Bureau, the city has a total area of , of which, is land and is water.
According to the Köppen Climate Classification system, Winterset has a hot