The area code 274 is located in Green Bay, Wisconsin.
Area code 274 serves Green Bay and much of northeastern Wisconsin as an overlay to the long-standing area code 920. It covers the same geographic footprint, so phone numbers in 274 and 920 reach the same cities, neighborhoods, and businesses around the Fox River and the Lake Michigan shoreline. With the overlay in place, local calls use 10-digit dialing, and existing 920 numbers do not change. The North American Numbering Plan Administrator (NANPA) designated 274 to ensure a steady supply of phone numbers as 920 approaches exhaustion.
Major cities and landmarks in the 920/274 area include:
Area code 274 does not change boundaries; it simply adds more numbering capacity over the same region. For context, area code 920 was created in 1997 from a split of 414, and 274 continues that history by providing relief without forcing number changes. New customers and additional lines may receive 274, while current users keep 920. “An overlay adds a new area code to the same geographic region,” — North American Numbering Plan Administrator (NANPA) — which is why 10-digit dialing is standard across the 920/274 area.