Area Code 437

Area Code 437 is in Ontario

Other Ontario Area Codes
226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 683, 705, 742, 753, 807, 905, 942

Ontario Area Code Overlays
(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.

Ontario Area Code Map