Ho-Ho-Kus is a borough in Bergen County, New Jersey, United States. As of the United States 2000 Census, the borough population was 4,060. It is also the home of several historical landmarks including the Ho-Ho-Kus Inn and The Hermitage.Ho-Ho-Kus was incorporated as a borough by an Act of the New Jersey Legislature on October 12, 1908, from what had originally been the Borough of Orvil, which was in turn created on March 8, 1905, from portions of Orvil Township.Ho-Ho-Kus ranks the 15th highest in New Jersey according to per-capita income. Its wealthiest neighbor, Saddle River, is ranked second.In 2008, New Jersey Monthly magazine ranked Ho-Ho-Kus the 41st best place to live in the state of New Jersey.