What's in an area code? To some, it's just the first three digits you must dial to denote geographic area. But, for others, it comes with a sense of local pride and identity. But, what if a city or ...

Starting Oct. 7, all metro Detroit residents will be required to dial 10 digits to complete calls in preparation for the 679 overlay.

Detroit starts 10-digit dialing due to the 313 area code reaching capacity, with the new 679 area code introduced.

Columbus's 614 area code, overlaid with 380 in 2016, is projected to run out of numbers by 2061. Technology, rather than population growth, is the primary driver of area code exhaustion. The 614 area ...