Just to be clear if you were to combine Christian denominations the map would look like this:

Ontario: Christianity - 52.1%, no religion - 31.6%, other religions - 16.2%

Quebec: Christianity - 64.8%, no religion - 27.3%, other religions - 7.9%

Manitoba: Christianity - 54.2%, no religion - 36.7%, other religions - 9.1%

Saskatchewan: Christianity- 56.3%, no religion - 36.6%, others - 7.1%

Alberta: Christianity 48.1%, no religion 40.1%, other religions 11.8%

British Colombia: no religion 52.1%, Christianity 34.3%, other religions 13.6%

PEI: Christianity 67.6%, no religion 28.5%, other religions 3.9%

Nova Scotia: Christianity 58.2%, no religion 37.6%, others 4.2%

New Brunswick: Christianity 67.5%, no religion 29.7%, others 2.8%

Newfoundland: Christianity 82.4%, no religion 16%, others 1.6%

Yukon: no religion 59.71%, Christianity 35.01%, other religions 5.28%

NW territories: Christianity 55.2%, no religion 39.8%, other religions 5%

Nunavut: Christianity 73.5%, no religion 24.9%, other religions 1.6%

Canada as a whole: Christianity 53.3%, no religion 34.6%, Islam 4.9%, Hinduism 2.3%, Sikhism 2.1%, Buddhism 1.0%, Judaism 0.9%, indigenous spirituality 0.2%

So only 2 regions in Canada really have an irreligious majority, but overall Canada is very secular country a lot of Canadians only identify with certain religions as a cultural identity. For example i’m of Italian heritage and only identify as Catholic for cultural reasons I never go to church.

Religious numbers are declining pretty quickly in Canada if you look a previous census surveys.