Ringwood is a borough in Passaic County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 12,228, reflecting a decrease of 168 (−1.4%) from the 12,396 counted in the 2000 Census, which had in turn declined by 227 (−1.8%) from the 12,623 counted in the 1990 Census. It is the home of Ringwood State Park which contains the New Jersey Botanical Garden at Skylands (plus Skylands Manor), the Shepherd Lake Recreation Area and historic Ringwood Manor.