Posen is a village in Presque Isle County of the U.S. state of Michigan. The population was 234 at the 2010 census. The village is in Posen Township.

Presque Isle County is a county in the Lower Peninsula of the U.S. state of Michigan. As of the 2020 census, the population was 12,982. The county seat is Rogers City. The county was authorized by state legislative action on April 1, 1840, but the county government was not established until 1871. The government was reorganized in 1875.