Chesterfield Charter Township is a charter township of Macomb County in the U.S. state of Michigan. As of the 2020 census the population wa…Chesterfield Charter Township is a charter township of Macomb County in the U.S. state of Michigan. As of the 2020 census the population was 45,376. The township was organized in 1842, formed from a portion of Macomb Township. In 1989 it gained charter status. The township is part of Metro Detroit.