Cottage Grove is a village in Dane County, Wisconsin, United States. Its population was 7,303 at the 2020 census. A suburb of Madison, it shares a school district with Monona. The village is located partially within the survey township of Cottage Grove.

Dane County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 561,504, making it the second-most populous county in Wisconsin after Milwaukee County. The county seat is Madison, which is also the state capital.