Deerfield is a village in Dane County, Wisconsin, United States. The population was 2,540 at the time of the 2020 census. The village is located within the Town of Deerfield. It is part of the Madison, Wisconsin metropolitan area, and a suburb of Madison. Towns and villages near Deerfield include Stoughton, Madison, Wisconsin, Marshall, Medina, London, Lake Mills, Cambridge, and Cottage Grove, Wisconsin.