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Washington, D.C.

Capital of the United States of America
Washington, DC, the U.S. capital, is a compact city on the Potomac River, bordering the states of Maryland and Virginia. It’s defined by imposing neoclassical monuments and buildings – including the iconic ones that house the federal government’s...
Population: 678,972 (2023)
Area code(s): 202 and 771
Demonym: Washingtonian
Highest elevation: 409 ft (125 m)
Home Rule Act: December 24, 1973
ISO 3166 code: US-DC