Peach County is a county located in the U.S. state of Georgia. As of the 2010 census, the population was 27,695. Its county seat is Fort Valley. Founded in 1924, it is the state's newest county, taken from Houston and Macon counties on July 8 of that year. Its namesake is the peach, Georgia's most famous crop.Peach County is included in the Warner Robins, GA Metropolitan Statistical Area, which is included in the Macon-Warner Robins, GA Combined Statistical Area.