British Columbia (Canada) is 961,059 times larger than Round Rock, Texas.
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: 1 km2 calculated
Round Rock is a city in the state of Texas within the Greater Austin, Texas metropolitan area and Williamson County. The 2013 census estimate places the population at 109,821. Wikipedia