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

Metro Detroit residents are now required to dial 10 digits for phone calls. Starting on Oct. 7, all local calls made within the 313 area code must be placed using 10 digits. This includes the area ...

The 313 area code is running low on phone numbers. A new 679 area code may be assigned to new customers starting Nov. 7, after 313 numbers are exhausted. Starting Oct. 7, all local calls within the ...