Pine Mountain is a town in Harris and Meriwether counties in the U.S. state of Georgia. As of the 2010 census it had a population of 1,304, up from 1,141 at the 2000 census. The Harris County portion of Pine Mountain is part of the Columbus, GA-AL Metropolitan Statistical Area, while the small portion that extends into Meriwether County is part of the Atlanta-Sandy Springs-Roswell Metropolitan Statistical Area.