About Cottage Grove, MNCottage Grove is located in Minnesota. Cottage Grove, Minnesota has a population of 36,672. Cottage Grove is more family-centric than the surrounding county with 42% households with children. The county percentage for households with children is 35%. The median household income in Cottage Grove, Minnesota is $85,963. The median household income for the surrounding county is $86,494 compared to the national median of $57,525. The median age of people living in Cottage Grove is 37.8 years. Cottage Grove WeatherThe average high temperature in July is 81.9 degrees, with an average low temperature in January of 1.9 degrees. The annual precipitation is 29.92. Cottage Grove MapCottage Grove real estate officesReal estate near Cottage GroveNearby CitiesNearby Cities Homes for Sale |