20319 -- U.S. ZIP code Population (2000): 57 Housing Units (2000): 23 Land area (2000): 0.176065 sq. miles (0.456006 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.176065 sq. miles (0.456006 sq. km) Located within: District of Columbia (DC) Location: 38.866924 N, 77.014244 W