Sun Prairie is a city in Dane County in the U.S. state of Wisconsin. A suburb of Madison, it is part of the Madison Metropolitan Statistical Area. The city’s population was 35,967 at the 2020 U.S. Census. It is the second-most populous city in Dane County after Madison.
Geography
According to the United States Census Bureau, the city has a total area of 12.25 square miles (31.73 km2), of which, 12.23 square miles (31.68 km2) is land and 0.02 square miles (0.05 km2) is water. The city of Sun Prairie includes land that once was part of the towns of Bristol, Burke, Sun Prairie, and Windsor. On January 5, 2007, the city of Sun Prairie, city of Madison, village of DeForest, and town of Burke entered into a cooperative plan under which all remaining land in the town of Burke has been designated for attachment into the cities and village.
Demographics
As of the census of 2010, there were 29,364 people, 11,636 households, and 7,641 families residing in the city. The population density was 2,401.0 inhabitants per square mile (927.0/km2). There were 12,413 housing units at an average density of 1,015.0 per square mile (391.9/km2).