Warthen is an unincorporated community and census-designated place (CDP) in Washington County, Georgia, United States. The community is located at the junction of Georgia State Route 15 and Georgia State Route 102, 8.3 miles (13.4 km) north of Sandersville. Warthen has a post office with ZIP code 31094. It was first listed as a CDP in the 2020 census with a population of 132.