Riley Township may refer to the following places in the U.S. state of Michigan: Riley Township, Clinton County, Michigan · Riley Township, St. Clair County. Riley Twp. Belle River Rd. Riley Twp., MI Phone: () FAX: () Township Hall. Belle River Rd., Riley. W. Pratt Rd. DeWitt, MI Phone: () Township Hall. W. Pratt Rd. Website: sancti-petri.infoownshipclintoncountymichigan.