British Columbia (Canada) is 634,379 times larger than Mesa, Arizona.
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
Mesa is a city in Maricopa County, in the State of Arizona and is a suburb located about 20 miles east of Phoenix. Mesa is the central city of the East Valley section of the Phoenix Metropolitan Area. Wikipedia