Nunavut - 1,936,113 km²
Quebec - 1,356,625 km²
Ontario - 1,076,395 km²
British Columbia - 944,735 km²
Alberta - 661,848 km²
By population:
Ontario - 13.5 million
Quebec - 8.5 million
British Columbia - 5.1 million
Alberta - 4.3 million
Manitoba - 1.3 million