Castine, ME

ZIP code 04420 covers the town of Bucksport, Maine. This picturesque area is home to the iconic Penobscot Narrows Bridge and Observatory, offering panoramic views of the Penobscot River. The town also features Fort Knox State Historic Site, a well-preserved military fort dating back to the 1800s. With its blend of natural beauty and historical significance, Bucksport is a charming destination for both locals and visitors alike.