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Rockaway Township is a township in Morris County, New Jersey, United States. As of the 2010 United States Census, the township's population was 24,156,[8][9][10]reflecting an increase of 1,226 (+5.3%) from the 22,930 counted in the 2000 Census, which had in turn increased by 3,358 (+17.2%) from the 19,572 counted in the 1990 Census.[19]Rockaway Township was incorporated as a township by an Act of the New Jersey Legislature on April 8, 1844, from portions of Hanover Township and Pequannock Township. Portions of the township were taken to form Rockaway Borough (June 19, 1894), Port Oram (June 26, 1895, now Wharton) and Denville Township (April 14, 1913).[20]A large part of the township consists of Picatinny Arsenal, a United States Army base that covers nearly 6,500 acres (2,600 ha) of the township (a portion of the facility is located in Jefferson Township), used mainly for the development of new weapons technologies, especially concerning anti-terrorism.

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