Millen is a city, and the county seat of Jenkins County, Georgia, United States. The population was 3,120 at the 2010 census, down from 3,492 at the 2000 census.

Jenkins County is a county located in the southeastern area of the U.S. state of Georgia. As of the 2020 census, the population was 8,674. The county seat is Millen. Historic and bountiful Magnolia Springs State Park is located between Millen and Perkins.