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
Earl of Bellomont died without surviving male issue in 1766. The late Earl was succeeded in the barony of Coote by his first cousin once removed, Charles Coote, who became the fifth Baron. Charles was the son of Charles Coote (1695–1750), Member of Parliament for County Cavan, son of the Honourable Thomas Coote, a Justice of the Court of King's Bench (Ireland), younger son of the first Baron. On 4 September 1767 the earldom of Bellomont was created for the third time when Charles was made Earl of Bellomont (although the title was probably erroneously spelled "Bell"a"mont" in the letters patent). On 18