Ingham County is a county located in the U. S. state of Michigan. As of the 2010 census, the population was 280,895. The county seat is Mason. Lansing, the state capital of Michigan, is located within the county, and is the only state capital located in a county that is not also its seat of government. The county is home to Michigan State University, Lansing Community College, and the Class A minor league baseball team Lansing Lugnuts.