How many square miles is washington dc?

Best Answer: Washington, D.C. has a total area of 68.3 square miles (177 km2), of which 61.4 square miles (159 km2) is land and 6.9 square miles (18 km2) (10.16%) is water.[36] The District is no longer 100 square miles (260 km2) due to the retrocession of the southern portion of the District back to the Commonwealth of Virginia in 1846. read more

Due to the District of Columbia retrocession, the city has a total area of 68.34 square miles (177.0 km 2), of which 61.05 square miles (158.1 km 2) is land and 7.29 square miles (18.9 km 2) (10.67%) is water. read more

Originally Washington DC was 10 miles square (or 100 square miles). But some of the land was returned to the Commonwealth of Virginia. read more