The village of Chickasaw is located in northern Marion Township, and the unincorporated communities of Cassella, St. Rose, Maria Stein, and Sebastian lie in the western, central, and northwestern portions of the township respectively.
The village of Chickasaw is situated in northern Marion Township, while Cassella, St. Rose, Maria Stein, and Sebastian are unincorporated communities within the township's western, central, and northwestern regions respectively.