Monroe Charter Township is a charter township of Monroe County in the U.S. state of Michigan. As of the 2020 census, the township population was 14,391.

Monroe County is a county in the U.S. state of Michigan. As of the 2020 Census, the population was 154,809. The largest city and county seat is Monroe. The county was established as the second county in the Michigan Territory in 1817 and was named for then-President James Monroe. Monroe County is coterminous with the Monroe metropolitan statistical area.