Resident Population in Chatham County, GA was 303.65500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Chatham County, GA reached a record high of 303.65500 in January of 2023 and a record low of 181.30000 in January of 1974. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Chatham County, GA - last updated from the United States Federal Reserve on May of 2024.