Chetek is a town in Barron County in the U.S. state of Wisconsin. The population was 1,644 at the 2010 census. The City of Chetek is located partially within the town.
The town of Chetek is in southeastern Barron County; the eastern border of the town is the border with Rusk County to the east. Lake Chetek is in the southwestern part of the town. The city of Chetek occupies the western portion of the lake, while the town of Chetek covers the rest of the lake. Pokegama Lake and Mud Lake, two connected lakes forming a single arm of Lake Chetek, extend north towards the geographic center of the town.
U.S. Route 53, a four-lane expressway, crosses the southwest corner of the town, with access from Exit 126.
According to the United States Census Bureau, the town has a total area of 33.6 square miles (86.9 km2), of which 30.4 square miles (78.8 km2) is land and 3.1 square miles (8.1 km2), or 9.27%, is water.
As of the census of 2000, there were 1,686 people, 707 households, and 542 families residing in the town. The population density was 55.4 people per square mile (21.4/km²). There were 1,073 housing units at an average density of 35.2 per square mile (13.6/km²). The racial makeup of the town was 98.64% White, 0.18% Black or African American, 0.18% Native American, 0.18% Asian, 0.06% from other races, and 0.77% from two or more races. Hispanic or Latino of any race were 0.53% of the population.