Meridian Charter Township is a charter township of Ingham County in the U.S. state of Michigan. As of the 2010 census, the township had a population of 39,688. The township is named after the Michigan meridian, which comprises the eastern border of the township. The township contains the unincorporated communities of Haslett and Okemos. Bordering East Lansing to the west, Meridian Charter Township is the third-largest municipality within the Lansing–East Lansing metropolitan area.