Chattooga County is a county located in the northwestern part of the U.S. state of Georgia. As of the 2010 census, the population was 26,015. According to the World Population Review, as of 2021, it is estimated at 24,803. The county seat is Summerville. The county was created on December 28, 1838. Chattooga County comprises the Summerville, GA Micropolitan Statistical Area, which is included in the Rome-Summerville Combined Statistical Area. Summerville is the site of the Chattooga County Courthouse. The county is home to several properties listed on the National Register of Historic Places.