Raven Rock is an unincorporated community and hamlet along the Delaware River approximately three miles north of Stockton along New Jersey Route 29. The hamlet was known earlier as Saxtonville. It is located within Delaware Township in Hunterdon County, in the U.S. state of New Jersey. It is the site of Bull's Island Recreation Area. The roc…Raven Rock is an unincorporated community and hamlet along the Delaware River approximately three miles north of Stockton along New Jersey Route 29. The hamlet was known earlier as Saxtonville. It is located within Delaware Township in Hunterdon County, in the U.S. state of New Jersey. It is the site of Bull's Island Recreation Area. The rock outcrop for which it is named is the southwest corner of the Hunterdon Plateau.