What is what area code is 629?

Area code 629 is an overlay for area code 615 in Tennessee, serving the Nashville area and surrounding areas. It was introduced on March 28, 2015 to provide additional numbering capacity for the region. Calls within the same geographical area covered by both area codes require dialing the full 10-digit phone number (area code + local number). Area code 629 was added due to the increasing demand for phone numbers as a result of population growth and the rise in mobile phone numbers.