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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: 671,803 (2022)
Area: 68.35 mi²
ZIP Codes: 20001–20098, 20201–20599, 56901–56999
Founded: July 16, 1790
State flower: The American beauty rose
Area code(s): 202 and 771
Demonym: Washingtonian