Lamar County, Georgia
Lamar County is a county located in the U.S. state of Georgia. As of 2000, the population is 15,912. The 2005 Census Estimate shows a population of 16,378. The county seat is Barnesville, Georgia.

History
The Georgia General Assembly proposed the constitutional amendment to create the county on August 17, 1920, and the citizens of the state voted in favor of the amendment on November 2, 1920.