Woodland Park is a borough in Passaic County, New Jersey, United States. As of the 2020 United States Census, the borough's population was 13,484. What is now Woodland Park was formed as …Woodland Park is a borough in Passaic County, New Jersey, United States. As of the 2020 United States Census, the borough's population was 13,484. What is now Woodland Park was formed as a borough under the name West Paterson, by an act of the New Jersey Legislature on March 25, 1914, from portions of Little Falls Township, based on the results of a referendum held on May 1, 1914.