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 2000 Census, Wyckoff ranked 54th in 100 highest-income places in the United States (with a population of at least 10,000). Statewide, Wyckoff ranked 41st in all New Jersey locations by per capita income, with a per capita money income of $49,375 as of 1999, an increase of 49.1% from the $33,124 recorded in 1989.
From the mid-18th century, what is now Wyckoff was a community within Franklin Township, which consisted of most of northern Bergen County west of the Saddle River. Starting in the 1840s, several new municipalities were created from portions of Franklin Township, so that today what is now Wyckoff borders eight different communities. Wyckoff was formed as a township by an Act of the New Jersey Legislature on November 2, 1926, replacing Franklin Township, based on the results of a referendum held that day. Portions of Wyckoff were ceded to Midland Park based on the results of a referendum held on June 9, 1931.
Though there is no solid historical evidence for any of the various theories, the most commonly given origin for the name Wyckoff, which was the origin accepted by the town committee when the town was established, is that the name is from the Lenape word wickoff, meaning "high ground", or that it is from wickok meaning "water". However, it should be noted that similarly-named Wyckoff Heights in New York City is named after the Wyckoff family, who settled in the New York/New Jersey area when both states were part of the Dutch colony of New Netherlands.