Kent County is located in the U.S. state of Michigan. As of the 2020 Census, the county had a population of 657,974, making it the fourth most populous county in Michigan, and the largest outside of the Detroit area. Its county seat is Grand Rapids. The county was set off in 1831, and organized in 1836. It is named for New York jurist and legal scholar James Kent, who represented the Michigan Territory in its dispute with Ohio over the Toledo Strip.

Grand Rapids is a city and county seat of Kent County in the U.S. state of Michigan. At the 2020 census, the city had a population of 198,893, making it the second-largest city in Michigan, after Detroit. Grand Rapids is the central city of the Grand Rapids metropolitan area, which has a population of 1,087,592 and a combined statistical area population of 1,383,918.