Troup County is a county located in the west central portion of the U.S. state of Georgia. As of the 2010 census, the population was 67,044. The county seat is LaGrange. Troup County comprises the LaGrange, GA Micropolitan Statistical Area. It is included in the Atlanta-Athens-Clarke County-Sandy Springs, GA Combined Statistical Area. The entirety of Troup County is located in the Middle Chattahoochee River-Lake Harding sub-basin of the ACF River Basin (Apalachicola-Chattahoochee-Flint River Basin). As of the 2010 United States Census, there were 67,044 people, 24,828 households, and 17,489 families residing in the county.