at , , L, M
The Greater Toronto Area is the most populous metropolitan area in Canada. As of the 2016 census, it has a population of 6,417,516, and has a census metropolitan area population of 5,928,040. The Greater Toronto Area is defined as the central city of Toronto, and the four regional municipalities that surround it: Durham, Halton, Peel, and York. The regional span of the Greater Toronto Area is sometimes combined with the city of Hamilton, Ontario and its surrounding region, to form the Greater Toronto and Hamilton Area. The Greater Toronto Area anchors a much larger unofficial urban agglomeration known as the Golden Horseshoe and an area officially designated as the Greater Golden Horseshoe.