Traverse City is a city in the U.S. state of Michigan. It is the county seat of Grand Traverse County, although a small portion extends into Leelanau County. It is the largest city in the 21-county Northern Michigan region. The population was 15,678 at the 2020 census, with 153,448 in the four-county Traverse City micropolitan area. Traverse City is also the second-largest city in Michigan north of the Tri-Cities, behind Marquette.