Gibson is a city in Glascock County, Georgia, United States. The population was 694 at the 2000 census. The city is the county seat of Glascock County and home to the Glascock County Courthouse, a National Register of Historic Places listed site.Gibson got its name from Judge William Gibson, a former Confederate Colonel and commanding officer of the 48th Georgia, who donated 500 dollars for Glascock County’s first public building, the courthouse. [1]