
Washington D.C. Is Not Part of Any U.S. State
Washington D.C. is a federal district created specifically to serve as the nation's capital, separate from all 50 states. Established by the Constitution in 1790, it was carved out of land donated by Maryland and Virginia, though Virginia's portion was returned in 1846. Residents were not allowed to vote in presidential elections until the 23rd Amendment was ratified in 1961.