Southwestern Ontario residents, including Kitchener-Waterloo, Brantford, London and Sarnia, will be getting a new area code in 2015: 548.

The region will get the new code starting in June of 2015, according to the Canadian Radio-television and Telecommunications Commission (CRTC), but the change won't affect the area codes of existing phone customers.

The 226 and 519 area codes already in use in the area are projected to run out by September 2015. 

The 226 area code was introduced in 2006, and the 519 area code was introduced in 1953.