Area codes in Toronto, Ontario
Toronto, Ontario uses 4 area codes — 416, 647, 437 and 942. The main Toronto area code is 416.
Area codes serving Toronto
Phone numbers in Toronto are written as ten digits — for example (416) 555-0190 — and fall in the Eastern Time zone.
How Toronto came to have 4 area codes
The original Toronto area code is 416, in service since 1947. As the area ran low on available numbers, overlay codes were added over the same region for new phone lines: 647 (2001), 437 (2013) and 942 (2025). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Toronto now uses all 4 codes and every local call is dialed with ten digits.
All Ontario area codes · Is a Toronto call a scam?
Nearby cities
- Brampton area codes
- Oakville area codes
- Oshawa area codes
- Hamilton area codes
- Guelph area codes
- Barrie area codes
- Kitchener area codes
- Buffalo area codes
More cities in Ontario
- Ottawa area codes
- London area codes
- Thunder Bay area codes
- Kingston area codes
- Windsor area codes
- Sudbury area codes
Frequently asked questions
What is the area code for Toronto?
The main area code for Toronto, Ontario is 416. Toronto is now served by 4 area codes in total: 416, 647, 437, 942.
How many area codes does Toronto have?
Toronto has 4 area codes: 416, 647, 437, 942.
Why does Toronto have more than one area code?
As Toronto used up the numbers available in its original area code (416, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Toronto number?
Dial all 10 digits — the area code (416 or 647 or 437 or 942) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.