Find any 630- phone number in Illinois
The 630 area code covers the suburban and exurban areas of the Chicago metropolitan area in Northeastern Illinois. It was split from the 708 area code in the 1996 split of the area. Originally, the 630 area code covered the entire Chicago metropolitan area.
The 630 area code is part of the North American Numbering Plan, which is a system developed in 1947 to facilitate efficient communication between businesses. It assigns a three-digit area code to various geographic locations, and provides customers with a three-digit number for local and long-distance calls. The area codes are rotational, which means they are split when needed to accommodate population growth and telephone companies. This helps prevent the need for customers to change their number when moving to a new area.