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How Big is Washington D.C.?

Geographical Size of Washington D.C. Washington D.C. covers a total area of 68.34 square miles (177.00 square kilometers), according to the United States Census Bureau. Of this area, 61.05 square miles (158.13 square kilometers) is land, and 7.29 square miles (18.87 square kilometers) is water. Washington D.C. is located on the east coast of the United States and is bordered…