Jackson is a city in Jackson County, Michigan, United States, and its county seat. The population was 31,309 at the 2020 census. It is served by Interstate 94 and U.S. Route 127. It is approximately 65 miles (105 km) east of Kalamazoo, 35 miles (56 km) west of Ann Arbor, 75 miles (121 km) west of Detroit and 35 miles (56 km) south of Lansing. Jackson is the core city of the Jackson metropolitan area, which includes all of Jackson County and has a population of 160,248.