Manhattan is a town in Gallatin County, Montana, United States. The population was 2,086 at the 2020 census. It is part of the 'Bozeman Micropolitan Statistical Area'.

Gallatin County is located in the U.S. state of Montana. With its county seat in Bozeman, it is the second-most populous county in Montana, with a population of 118,960 in the 2020 Census.