Wyckoff is a township in Bergen County, New Jersey, United States. As of the 2010 United States Census, the township's population was 16,696, reflecting an increase of 188 (+1.1%) from the 16,508 counted in the 2000 Census, which had in turn increased by 1,136 (+7.4%) from the 15,372 counted in the 1990 Census. As of the 2010 Census, Wyckoff ranked 55th in 100 highest-income places in the United States (with a population of at least 10,000) at $103,614 HHI.