District of Columbia Landscape Architect Seal

Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the U…
Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with Maryland to its north and east. It was named after George Washington, the first president of the United States. The district is named for Columbia, the female personification of the nation.
  • Country: United States
  • Highest elevation: 409 ft (125 m)
  • Lowest elevation: 0 ft (0 m)
  • Area code(s): 202 and 771
  • Residence Act: July 16, 1790
  • Organized: February 27, 1801
  • Consolidated: February 21, 1871

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Data from: en.wikipedia.org