Belleville is a village in Dane and Green counties in the U.S. state of Wisconsin. The population was 2,491 at the 2020 census. Of this, 1,909 were in Dane County, and 582 were in Green County. The Dane County portion of Belleville is part of the Madison Metropolitan Statistical Area, while the Green County portion is part of the Monroe Micropolitan Sta…Belleville is a village in Dane and Green counties in the U.S. state of Wisconsin. The population was 2,491 at the 2020 census. Of this, 1,909 were in Dane County, and 582 were in Green County. The Dane County portion of Belleville is part of the Madison Metropolitan Statistical Area, while the Green County portion is part of the Monroe Micropolitan Statistical Area.