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is a Borough in Passaic County, New Jersey, United States. As of the United States 2000 Census, the borough population was 12,396. It is the home of Ringwood State Park which contains the State Botanical Garden, the Shepherd Lake Recreation Area, and Skylands and Ringwood Manors.
The Borough of Ringwood was incorporated by an Act of the New Jersey Legislature on February 23, 1918, from a "portion of the Township of Pompton", as one of three boroughs formed from Pompton Township, joining Bloomingdale and Wanaque, based on the results of a referendum held on March 22, 1918. The first organizational meeting of the Borough Council took place in the existing Borough Hall on May 6, 1918
The original inhabitants of the area were the Lenape and Ramapough Native Americans.
Early in the 18th Century, iron was discovered in the area, and the Ogden family built a blast furnace in Ringwood in 1742. By 1765, Peter Hasenclever used Ringwood as the center of his ironmaking operations which included 150,000 acres (610 km
Iron mining was prominent in the area from the 1700s until the Great Depression. Mines such as the London Mine, Roomy Mine, Peters Mine and Hope mine were originally opened by Peter Hesenclever's London Company.
Ringwood Manor was home to a number of well-known ironmasters from the 1740s to the late 19th century. During the American Revolutionary War, Robert Erskine managed ironmaking operations from Ringwood, and became George Washington's first geographer and Surveyor-General, producing maps for the Continental Army; Washington visited the Manor House several times. Ringwood iron was used in the famous Hudson River Chain, and for tools and hardware for the army. One of the Manor's last owners was Abram S. Hewitt, ironmaster, educator, lawyer, U.S. Congressman, and Mayor of New York City. The Manor is part of a National Historic Landmark District.