Trion is a town in Chattooga County, Georgia, United States. The population was 1,827 as of the 2010 census, down from 1,993 at the 2000 census. Trion is the second largest incorporated community in Chattooga County, which has a population of approximately 26,000. Trion is known as the denim capital of the world because of the Mount Vernon manufacturing plant, which employs about 4,000 people.