Complex sentence: By area, the region is the largest area code in Minnesota, covering roughly the northern half and including the cities of Duluth, Hibbing, Brainerd, Bemidji, Fergus Falls, and Moorhead.
Split into simpler sentences: By area, the region is the largest area code in Minnesota, covering roughly the northern half of the state. It includes the cities of Duluth, Hibbing, Brainerd, Bemidji, Fergus Falls, and Moorhead.