is a borough in Bergen County, New Jersey, United States. At the United States 2000 Census, the borough population was 8,047. The borough's territory includes a dam on the Hackensack River that forms the Oradell Reservoir.
, from portions of Harrington Township, Midland Township and Palisades Township, at the height of the
phenomenon then sweeping through Bergen County. The name
was a portmanteau created from the names of two communities within the new borough: Ora
. On November 12, 1920, the borough's name was officially changed to "Oradell", based on the results of a referendum held ten days earlier.
According to the United States Census Bureau, the borough has a total area of 2.5 square miles (6.6 km