According to Portland Pie Company CEO Jeff Perkins, people were already waiting at the door at 10:55 a.m.
The new restaurant at 91 Main St. specializes in pizza but has other food items and a wide range of local beers.
The Bangor restaurant is Portland Pie's eighth location in Maine and New Hampshire and Perkins said the company is excited to be growing.
"It was super great to see people are excited we're here and ready to go in. Once the rain stopped this afternoon, we've been busy ever since and we're on a wait. We're having a great night," Perkins said.
The restaurant will be open until 10 p.m. Sunday through Wednesday and until 11 p.m. on Thursday through Saturday of each week.