Saddle River traces its origins to 1675.[29] Saddle River was incorporated as a borough by an act of the New Jersey Legislature on November 22, 1894, from portions of Orvil Township, based on the results of a referendum held three days earlier.[30] The borough was formed during the "Boroughitis" phenomenon then sweeping through Bergen County, in which 26 boroughs were formed in the county in 1894 alone.