Arcadia Township is a civil township of Manistee County in the state of Michigan. Its population at the 2000 census was 621. Arcadia is an unincorporated community within the township, on the shore of Lake Michigan.
Tourism is popular in Arcadia, with a large number of summer visitors who maintain residences here. People are drawn to the natural beauty and relative remoteness of the area. A number of the visitors are connected with the nationally renowned Arcadia Bluffs Golf Course, built in 1999 in the south of the township.
The population predominantly comprises White Americans.