[1] Clinton County is included in the Lansing-East Lansing, MI Metropolitan Statistical Area.

Capital Region International Airport (IATA: LAN, ICAO: KLAN, FAA LID: LAN) is a public, Class C airport located 3 miles (4.8 km) northwest of downtown Lansing, primarily in DeWitt Township.

The airport accessible by Grand River Avenue (Business Route 96) and is located 1.5 miles (2.4 km) south of Interstate 69.

The county government operates the jail, maintains rural roads, coordinates local emergency management, operates the major local courts, keeps files of deeds and mortgages, maintains vital records, administers public health regulations, and participates with the state in the provision of welfare and other social services.

The county board of commissioners controls the budget but has only limited authority to make laws or ordinances.

In Michigan, most local government functions — police and fire, building and zoning, tax assessment, street maintenance, etc.