Resident Population in Cook County, GA was 17.98400 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Cook County, GA reached a record high of 17.98400 in January of 2024 and a record low of 12.10000 in January of 1971. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cook County, GA - last updated from the United States Federal Reserve on April of 2026.