Ontario Area Codes
Area Codes in Ontario
Ontario (ON) has 13 area codes currently in use across the province. These area codes are essential for telephone communications throughout the region and are assigned by the Canadian Numbering Administrator (CNA).
The area codes currently serving Ontario are: 226, 249, 289, 343, 365, 416, 437, 519, 613, 647, 705, 807, 905. Each of these codes has a specific coverage area and serves different communities within the province.
The major cities in Ontario that use these area codes include London, Kitchener, Windsor, Sudbury, Thunder Bay. These urban centers represent the highest population density and telephone usage in the province.
The telephone numbering plan in Ontario has evolved over time. The oldest area code, 416, was introduced on January 1, 1947, while the newest addition, 365, was implemented on March 25, 2013 to accommodate the growing demand for telephone numbers.
On this page, you will find detailed information about each area code, including when it was introduced, its current status, and the major cities it serves. You can also explore the interactive map to visualize the geographic coverage of these area codes.
Carte de la province
Area Codes in Ontario
Major Cities
- Toronto
- Ottawa
- Mississauga
- Hamilton
- London