If you have been used to dialing only seven digits for a telephone number when making local calls within the Detroit area, get ready to include the 313 area code as part of that process. A new ...

State officials said they’ve almost exhausted the 313 area code and Detroiters will have to start dialing the full 10-digit phone number, even for local calls, starting in October. Beginning Oct. 7, ...

Phone customers in the 313 area code, which covers Detroit and several suburbs, will have to start including the area code when making local calls. Here’s everything to know about when this change ...

State officials said they've almost exhausted the 313 area code and Detroiters will have to start dialing the full 10-digit phone number, even for local calls, starting in October. Beginning Oct. 7, ...