Newmarket, NH

ZIP code 03857 covers the town of Newmarket, located in Rockingham County, New Hampshire. This area is home to the Lamprey River, a picturesque waterway that flows through the town and offers opportunities for outdoor activities such as kayaking and fishing. Additionally, Newmarket is known for its historic downtown area with charming shops and restaurants, as well as the Stone Church, a popular live music venue in the community.