"Penn Township, Michigan"@en . . "20.4"^^ . "1774"^^ . "4.7e+06"^^ . . "-4" . "271.0"^^ . "270.967"^^ . "-5" . "9.17e+07"^^ . . . "8.69e+07"^^ . "Penn Township is a civil township of Cass County in the U.S. state of Michigan. The population was 1,774 at the 2010 census.Penn Township is the location of the Bonine House, a lookout post on the Underground Railroad, on the corner of M-60 and Penn Road. Vandalia, located within Penn Township, also was affiliated with the Underground Railroad."@en . .