Detroiters will soon need to dial all ten digits when making local calls, as the iconic 313 area code prepares to share its territory with a new code, 679. The change, set to take effect in 2025, is driven by the dwindling supply of available phone numbers within the existing 313 region, which encompasses the city of Detroit and several surrounding communities.

The Michigan Public Service Commission (MPSC) approved the overlay plan to ensure a continuing supply of numbers for residents and businesses. This avoids the more disruptive alternative of splitting the 313 area, which would require some existing customers to change their phone numbers.

The introduction of the 679 area code reflects the sustained demand for phone numbers fueled by population growth, increased mobile device usage, and the proliferation of internet-connected devices. Similar overlays have been implemented in other metropolitan areas across the United States facing number exhaustion.

Telecommunications companies are now tasked with educating customers about the upcoming change and updating their systems to accommodate ten-digit dialing. Residents are encouraged to reprogram speed dial and automatic dialing systems to include the area code to avoid disruptions in service.

While the transition may initially cause some inconvenience, experts say the overlay is a necessary step to maintain reliable communication services in the Detroit area. The MPSC has stated they will continue to monitor the situation and make adjustments as needed to ensure a smooth transition for all customers. The change marks a significant shift in how Detroiters connect, but ultimately aims to keep the lines of communication open for years to come.