Phone area codes for Toronto, ON

Canada's largest city and the capital of Ontario, Toronto sits on the northwest shore of Lake Ontario and serves as the country's primary financial, media, and technology hub. It is one of the most multicultural cities in the world.

Dialling from and to Toronto

Because Toronto sits inside an overlay region with 3 overlapping area codes, callers must always dial 10 digits — even for calls between two phones on the same street. From outside Canada and the United States, dial your international access prefix, then +1, then the 10-digit number.

Mobile carriers in Toronto typically issue numbers from whichever overlay code is currently being released by the NANP relief plan. As a result, two members of the same household frequently carry numbers from two different area codes — for example a long-time resident with an original-assignment number and a newer subscriber with an overlay number.

About Toronto, Ontario

Toronto is located in Ontario, Canada. Canada's largest city and the capital of Ontario, Toronto sits on the northwest shore of Lake Ontario and serves as the country's primary financial, media, and technology hub. It is one of the most multicultural cities in the world. The city falls within the Eastern Time (EST/EDT, UTC-5/-4) time zone.

Numbers issued to subscribers in Toronto can come from any of the area codes assigned to the surrounding numbering plan area: 416, 647, 437. With number portability now standard across all Canadian carriers, the area code attached to a Toronto number tells you only where that number was first issued — not who currently carries it or where the device is physically located.

If you are trying to identify a recent call from 416 or 647 or 437, the caller is most likely either based in Toronto or another community within the same NPA, has previously held a number issued in this area, or — in the case of telemarketing and scam calls — is spoofing a local prefix to increase the chance you pick up.