Castine, ME

ZIP code 04420 corresponds to Bucksport, Maine. This scenic town sits along the Penobscot River and is home to the iconic Penobscot Narrows Bridge and Observatory. Visitors can also enjoy the historic Fort Knox State Historic Site, which offers stunning views of the river and surrounding area. Additionally, Bucksport boasts a charming downtown area with local shops and eateries for residents and tourists to enjoy.