Waldorf, MD

ZIP code 20604 is located in Calvert County, Maryland. The area is home to the Calvert Marine Museum, known for its exhibits on regional maritime history and interactive displays on the Chesapeake Bay. Also within this ZIP code is Solomons Island, a charming waterfront community with shops, restaurants, and the Drum Point Lighthouse. Outdoor enthusiasts can enjoy the nearby hiking trails and beautiful views of the Patuxent River.