The area that became Janesville was the site of a Ho-Chunk village named Įnį poroporo (Round Rock) up to the time of Euro-American settlement. In the 1825 Treaty of Prairie du Chien, the United States reco… See more

According to the United States Census Bureau, the city has a total area of 34.76 square miles (90.03 km ), of which 34.16 square miles (88.47 km ) is land and 0.6 square miles (1.55 km ) is water. The city is divided by the … See more

As of the census of 2020, the population was 65,615. The population density was 1,920.8 inhabitants per square mile (741.6/km ). There were 28,430 housing units at an average density of 832.3 per square mil… See more