Jasper County is a county located in the central portion of the U.S. state of Georgia. As of the 2020 census, the population was 14,588, up from 13,900 in 2010. The county seat is Monticello. Jasper County is part of the Atlanta-Sandy Springs-Roswell MSA.

Monticello is the largest city in and the county seat of Jasper County, Georgia, United States. The city includes historic buildings such as the Jasper County Courthouse, Monticello High School and the Monticello Historic District. The population was 2,657 at the 2010 census. It is 56 miles (90 km) southeast of Atlanta.