Baraboo is the largest city in and the county seat of Sauk County, Wisconsin, United States. The largest city in the county, Baraboo is the principal city of the Baraboo Micropolitan Statistical Area which comprises a portion of the Madison Combined Statistical area. Its 2020 population was 12,556. It is situated on the Baraboo River.

Sauk County is a county in Wisconsin. It is named after a large village of the Sauk people. As of the 2020 census, the population was 65,763. Its county seat and largest city is Baraboo. The county was created in 1840 from Wisconsin Territory and organized in 1844. Sauk County comprises the Baraboo, WI Micropolitan Statistical Area and is included in the Madison metropolitan area.