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.
According to the U.S. Census Bureau, the county has a total area of 446 square miles (1,160 km2), of which 414 square miles (1,070 km2) is land and 32 square miles (83 km2) (7.2%) is water.
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).
The government of Troup County is based on an elected county commission, or council. The chairman is elected county-wide, or at-large, and four commissioners are each elected from single-member districts. District 5 includes much of the territory of LaGrange, the county seat and most densely settled community in the county.