Hardyston Township is a township in Sussex County, New Jersey, United States. As of the 2020 United States census, the township's population was 8,125, a decrease of 88 (-1.1%) from the 2010 census count of 8,213, which in turn reflected an increase of 2,042 (+33.1%) from the 6,171 counted in the 2000 census. From Wikipedia
