What is 640 area code?

The 640 area code is located in the province of Quebec, Canada. It was implemented as an overlay of the 450 area code in order to accommodate the increasing demand for telephone numbers in the region. The 640 area code officially came into effect on September 15, 2020.

640 area code covers the same geographic area as the 450 area code, which includes cities such as Longueuil, Laval, Terrebonne, Boucherville, Repentigny, and Saint-Jérôme. This area is a major hub for industries such as manufacturing, technology, and aerospace.

Residents and businesses in the 640 area code must now dial the full 10-digit phone number (including the area code) for all local calls in order to accommodate the overlay. This change was implemented to ensure the continued availability of telephone numbers in the region and to prevent the need for a new area code to be introduced in the future.