Area Code 437
Area Code 437 is in Ontario
(289 and 365 and 742 and 905) - (416 and 437 and 647)
(226 and 382 and 519 and 548) - (343 and 613 and 753) - (249 and 683 and 705)
Area Code 437 History:
03/25/2013
Area code 437 was officially put into service. Area code 437 is an overlay of area codes area codes 416 and 647.
The Canadian Radio-television and Telecommunications Commission (CRTC) has approved area code 942 as a distributed overlay covering existing area codes 416, 437, 647 effective 04/26/2025.
Ten digit dialing (area code + seven digit number) is necessary in the 416/647/437 overlay because two different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.
Major cities or places in Ontario within area code 437 include:
When implemented the area code overlays of 416, 437 and 647 will serve the City of Toronto. The surrounding suburbs are served by area code 905.
