Clayton County Board of Commissioners
Clayton County was formed out of Fayette (to the west) and Henry (to the east) in 1858 and was named after Judge Augustin S. Clayton, who served in the Georgia General Assembly. As of 2010, the population was 259,424. At 143 square miles, Clayton is the third smallest county in the state (out of 159) and the second smallest in the 10-county region, larger only than Rockdale.