Resident Population in the District of Columbia was 670.05000 Thous. of Persons in January of 2021, according to the United States Federal Reserve. Historically, Resident Population in the District of Columbia reached a record high of 756.66800 in January of 1970 and a record low of 565.23000 in January of 1998. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in the District of Columbia - last updated from the United States Federal Reserve on March of 2024.