Chatham County, Georgia Chatham County, Georgia Chatham County is a county in the U.S. state of Georgia, and is located on the state's Atlantic coast. The county seat and largest city is Savannah. One of the original counties of Georgia, Chatham County was created February 5, 1777, and is named after William Pitt, 1st Earl of Chatham. The U.S. Census Bureau's 2017 population estimate for Chatham County was 290,501 residents, making Chatham the most populous Georgia county outside the Atlanta metropolitan area. The official 2010 Census counted 265,128 residents in Chatham County. Chatham is the core county of the Savannah metropolitan area. According
George Mackenzie, 3rd Earl of Cromartie 1748. He died on 28 September 1766 in Soho Square, London, having never gone north of the River Trent again, in keeping with the terms of his pardon. He married Isabel Gordon, daughter of Sir William Gordon of Invergordon, on 23 September 1724 and had a large family of young children in 1746. His numerous children, three sons, and nine daughters, were: George Mackenzie, 3rd Earl of Cromartie George Mackenzie, 3rd Earl of Cromartie (c. 1703–28 September 1766) was a Scottish nobleman. He succeeded his father John, the 2nd earl, in February 1731. In 1745, he joined Charles Edward Stuart