George Michael Troup was Governor of Georgia from 1823 to 1827. During Governor Troup's administration the treaty with the Creek Nation was negotiated by the United States Government for the cession of the territory of which Troup County now is a part. The treaty was signed at Indian Springs, Georgia, on February 12, 1825, by commissioners on the part of the United States Government and by William McIntosh, President and Head Chief of the Creek Nation. This territory, which included the land between the Flint and Chattahoochee Rivers, was purchased for the State of Georgia for $400,000 and other considerations.
The original Troup County contained twelve land districts with 3,146 land lots. "That all that land lying between said rivers, and known as the Third Section, shall form one county to be called Troup" is a quote from the Act of the General Assembly of Georgia dated December 11, 1826, which further identifies Troup County. Troup County, which received its name from Governor George Michael Troup, was opened for settlement in 1827.
SOURCE: LaGrange-Troup Chamber of Commerce

Present day Troup County consists of the towns of Cannonville, Gabbettville, Louise, Trimble, Harrisonville, Hogansville, Wares Crossroads, Mountville, West Point, and the county seat, LaGrange.