Haverhill, MA

ZIP code 01831 is located in Haverhill, Massachusetts. This area is known for its picturesque landscapes and historic landmarks. Key points of interest in this ZIP code include Winnekenni Castle, a medieval-style mansion surrounded by beautiful grounds, and Crystal Lake, a popular spot for outdoor activities such as swimming and picnicking. Additionally, residents and visitors can enjoy the tranquil setting of Plug Pond, a serene lake perfect for fishing and kayaking.