Morrisonville is an unincorporated community in the village of Windsor, in Dane County, Wisconsin, United States, approximately 18 miles north of Madison. The Yahara River flows through the community. The main road running through Morrisonville is County Trunk DM, which connects from State Highway 51 approximately 8 miles to the village of Dane, Wisconsin. At each entrance into the town on DM is a welcome sign calling Morrisonville "Frogtown U.S.A.