British Columbia (Canada) is 5,318 times larger than Washington, D.C..
British Columbia, also commonly referred to by its initials BC, is a province located on the west coast of Canada. British Columbia is also a component of the Pacific Northwest, along with the U.S. states of Oregon and Washington. Wikipedia
Area: 178 km2 calculated
Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. Wikipedia