Lansing is the capital city of the U.S. state of Michigan, and is located mostly in Ingham County. A small portion of the city extends into Eaton County, and a small portion containing Capital City Airport extends into adjacent Clinton County. As of the 2000 census, it has a population of 119,128. The Lansing metropolitan area is remarkable in that despite being a relatively small city, it is an important center for educational, cultural and governmental institutions, including three medical schools, two law schools, a Big Ten Conference university (Michigan State), the state capitol, the Supreme Court, an appellate court, a federal court, the Michigan State Library and Historical Center, and headquarters of four national insurance companies.

Lansing is the only state capital city in the United States that extends into three counties and is the only state capital that is not also the county seat of its own county.