 Upper Saddle River was formed as a borough by an act of the New Jersey Legislature on November 22, 1894, from portions of Hohokus Township and Orvil Township, based on the results of a referendum held two days earlier.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.Upper Saddle River's referendum passed on November 20, one day after the referendum passed for Saddle River.