Montmorency County is a county located in the U.S. state of Michigan. As of the 2020 census, the population was 9,153, making it the second-least populous county in Michigan's Lower Peninsula, behind its southern neighbor, Oscoda County. The county seat is Atlanta.
Country: United States
State: Michigan
Founded: 1840 (created) · 1881 (organized)
Named for: House of Montmorency
Seat: Atlanta
Largest settlement: Lewiston · Hillman (incorporated)