Cottage Grove is a city located in Washington County Minnesota. With a 2020 population of 38,442, it is the 25th largest city in Minnesota and the 1023rd largest city in the United States . Cottage Grove is currently growing at a rate of 1.10% annually and its population has increased by 11.14% since the most recent census, which recorded a population of 34,589 in 2010. Cottage Grove reached it's highest population of 38,442 in 2021. Spanning over 38 miles, Cottage Grove has a population density of 1,143 people per square mile.
The average household income in Cottage Grove is $115,464 with a poverty rate of 2.26%. The median rental costs in recent years comes to $1,342 per month, and the median house value is $249,800. The median age in Cottage Grove is 36.8 years, 36 years for males, and 37.6 years for females.