Which province is Canada's largest by population?

Discover Canada records this in one direct sentence. The guide writes: At more than 12 million, the people of Ontario make up more than one-third of Canadians. The province the test wants is therefore Ontario — Canada's most populous province.

The number speaks for itself. Discover Canada commits Ontario's population to more than 12 million people — and identifies that as more than one-third of all Canadians. So Ontario alone holds over a third of the country's population. No other province comes close in absolute numbers, which is why Ontario leads any population ranking in Canada.

Ontario's population powers a vital economy. Discover Canada writes: "The large and culturally diverse population, natural resources and strategic location contribute to a vital economy. Toronto is the largest city in Canada and the country's main financial centre. Many people work in the service or manufacturing industries, which produce a large percentage of Canada's exports." So Ontario's population is not just large but economically active — concentrated in service and manufacturing sectors that drive a substantial share of Canadian exports. Toronto, the country's largest city, is also located in Ontario.

Ontario's geography supports its population. Discover Canada writes: "More than half the people in Canada live in cities and towns near the Great Lakes and the St. Lawrence River in southern Quebec and Ontario, known as Central Canada and the industrial and manufacturing heartland. Southern Ontario and Quebec have cold winters and warm humid summers. Together, Ontario and Quebec produce more than three-quarters of all Canadian manufactured goods." So the population concentration in Ontario is supported by the favourable Central Canada geography (Great Lakes proximity, fertile southern climate, transportation routes), and by being part of the manufacturing heartland that produces three-quarters of Canadian manufactured goods. Ontario's "Niagara region is known for its vineyards, wines and fruit crops" and its farmers raise dairy, beef, poultry, vegetables, and grain — making the province both densely populated AND agriculturally productive. Founded by United Empire Loyalists, Ontario also has the largest French-speaking population outside Quebec — adding linguistic diversity to its demographic weight as Canada's most populous province.

The question is testing whether new citizens know which province is largest by population. Discover Canada commits to one province: Ontario, with more than 12 million people. The right test answer matches that.

The wrong answer choices each substitute a different province. Quebec has nearly 8 million people — large but smaller than Ontario. Alberta is the most populous Prairie province but smaller than Ontario. British Columbia is Canada's Pacific province but smaller in population than Ontario. Only Ontario, with more than 12 million people making up more than one-third of Canadians, matches.