Sinnamahoning, PA

ZIP code 15861 belongs to Reynoldsville, Pennsylvania, a small borough in Jefferson County. The area is primarily residential with a charming downtown area featuring local businesses like restaurants and shops. One of the most notable landmarks in the area is the Reynoldsville Founders Park, which celebrates the town's history and founders. Additionally, the nearby Reynoldsville State Police Barracks serves as an important law enforcement hub for the community.