Lake Charter Township is a charter township of Berrien County in the U.S. state of Michigan. The population was 2,972 at the 2010 census.The township is located in the west central portion of the county. Lake Michigan and the city of Bridgman are to the west, Lincoln Township to the north, Baroda Township to the east, Weesaw Township to the south, and Chikaming Township to the southwest.