Grand Traverse County is a county located in the U.S. state of Michigan. As of the 2020 census, the population was 95,238, making it the largest county in Northern Michigan. Its county seat is Traverse City. The county is part of the Traverse City micropolitan area, which also includes neighboring Benzie, Kalkaska, and Leelanau counties. Long a part of territory under the Council of Three Fires, Grand Traverse County's first European settlement was established in 1839.