Lansing is the capital city of the U.S. state of Michigan, and the state's sixth largest city. It is located mostly in Ingham County, though a small portion of the city extends into Eaton County. As of the 2000 census, it has a population of 119,128, an Urbanized Area (UA) population of 300,032, and, as of July 1, 2006, a Metropolitan Statistical Area (MSA) population of 454,044. The even larger Combined Statistical Area (CSA) population, which includes Shiawassee County, is estimated at 526,956. The Lansing metropolitan area is an important center for educational, cultural, governmental and high-tech manufacturing institutions, including three medical schools, two law schools, a Big Ten Conference university (Michigan State), the state capitol, the state Supreme Court, an appellate court, a federal court, the Library of Michigan and Historical Center, and headquarters of four national insurance companies. Lansing is the only U.S.