Cottage Grove is a village in Dane County, Wisconsin, United States.

A suburb of Madison, it shares a school district with Monona.

The village is located partially within the survey township of Cottage Grove.

[6] According to the United States Census Bureau, the village has a total area of 3.48 square miles (9.01 km2), all of it land.

There were 2,289 housing units at an average density of 657.8 per square mile (254.0/km2).

The 1,453 housing units had an average density of 635.5 per square mile (245.0/km2).