Teaneck is a township in Bergen County, New Jersey, United States, and a suburb in the New York metropolitan area. As of the 2010 United States Census, the township's population was 39,776, reflecting an increase of 516 from the 39,260 counted in the 2000 Census, which had in turn increased by 1,435 from the 37,825 counted in the 1990 Census. Read More