Park Ridge obtained a portion of River Vale (July 15, 1929), exchanged portions with Woodcliff Lake (December 12, 1955), received part of Washington Township (November 26, 1956), exchanged portions with Hillsdale (February 10, 1958) and Woodcliff Lake (June 9, 1958) and received another part of Washington Township (August 11, 1958).[20] The borough's name derives from its location.

Park Ridge's Pascack Historical Society Museum, at 19 Ridge Avenue, houses the world's only wampum drilling machine. This wooden artifact was made in Park Ridge by the Campbell Brothers who invented a way to drill through long pieces of hair pipe shells so that they could be strung and worn as breast plates by the Plains Indians, among others. Needing water for the operation, the industrious brothers leased a woolen mill that stood on the Pascack Brook. When that burned down they built their own mill farther down Pascack Creek on their land and another shop on Pascack Road near their homestead. Both buildings housed drilling machines on their second floors where they were safe from prying eyes, as the two machines had not been patented. In the early 19th century, John Jacob Astor purchased wampum from the Campbells to trade with the Native Americans of the Pacific Northwest whose beaver pelts he turned into men's hats.[23] The best years for the wampum business were between 1835 and 1866. The drilling machine can be seen at the Pascack Historical Society Museum on Wednesdays from 10 a.m. until noon and Sundays from 1-4 p.m. Admission is free.

Historic sites
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Park Ridge is home to the following locations on the National Register of Historic Places:

John G. Ackerson House - 142 Pascack Road 
Isaac Debaun House - 124 Rivervale Road 
Park Ridge Station - Hawthorne and Park Avenue 
Peter D. Perry House - 107 Rivervale Road 
Wortendyke Barn - 13 Pascack Road 
Frederick Wortendyke House (Park Ridge, New Jersey) - 12 Pascack Road