Resident Population in the District of Columbia was 693.64500 Thous. of Persons in January of 2025, according to the United States Federal Reserve. Historically, Resident Population in the District of Columbia reached a record high of 900.00000 in January of 1943 and a record low of 278.00000 in January of 1900. 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 2026.