| Official Name: | Town of Cottage Grove |
| Settlement Type: | Town |
| Motto: | "Where Everyone Is Your Neighbor" |
| Mapsize: | 260px |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Dane County |
| Pushpin Map: | Wisconsin#USA |
| Pushpin Label: | Town of Cottage Grove |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Total: | 3791 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 43.0622°N -89.1953°W |
| Postal Code Type: | Zip code |
| Postal Code: | 53527 |
| Area Code: | 608 |
| Website: | Town of Cottage Grove, Wisconsin |
The Town[1] of Cottage Grove is located in Dane County, Wisconsin. As of the 2020 census, the town had a population of 3,791.[2] The Village of Cottage Grove is located partially in the town, but is governed independently. The unincorporated communities of Door Creek, Nora, and Vilas also are located in the town. The unincorporated communities of Hoffman Corners and Hope also are located partially in the town.
The town is located at 43.0622°N -89.1953°W. According to the United States Census Bureau, the town has a total area of 33.4mi2, all of it land.
As of the census[3] of 2020, there were 3,791 people, 1,477 households, and 1,468 families residing in the town. The population density was 115/mi2. There were 1,356 housing units at an average density of 40.6/mi2. The racial makeup of the town was 97.89% White, 0.39% Black or African American, 0.10% Native American, 0.78% Asian, 0.16% from other races, and 0.68% from two or more races. 1.04% of the population were Hispanic or Latino of any race.
There were 1,338 households, out of which 40.7% had children under the age of 18 living with them, 75.3% were married couples living together, 5.2% had a female householder with no husband present, and 16.4% were non-families. 11.4% of all households were made up of individuals, and 2.7% had someone living alone who was 65 years of age or older. The average household size was 2.87 and the average family size was 3.13.
The population was 28.8% under the age of 18, 5.3% from 18 to 24, 30.7% from 25 to 44, 28.8% from 45 to 64, and 6.3% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 104 males. For every 100 females age 18 and over, there were 104 males.
The median income for a household in the town was $71,007, and the median income for a family was $72,246. Males had a median income of $45,379 versus $30,509 for females. The per capita income for the town was $26,602. About 1.3% of families and 2.4% of the population were below the poverty line, including none of those under age 18 and 9.7% of those age 65 or over.