Welcome to the Mountainside Public Library

The Mountainside Public Library will be closed, Thursday March 5th, 2015, due to the winter weather and in compliance with the State of Emergency delared by Governor Christie. 

Tonight's scheduled program "Belly Fat, Stress & Hormones" has been rescheduled to Thursday, June 4th, 2015.


The Mountainside Public Library is located on Constitution Plaza in Mountainside, New Jersey. The library features a large selection of books, periodicals, movies, music, audiobooks and reference resources. There are also public computer workstations, free wireless Internet access, a community meeting room, a children's center and regularly scheduled entertainment and educational events.


To search our catalog, or access your account, please click the catalog icon below.



The Mountainside Public Library is the proud first recipient of the
LUCCy Award!

The Libraries of Union County Consortium (LUCC) awards the LUCCy yearly to a Public Library in Union County to honor Excellence in Library Service.  Read more...

Looking for audio books or ebooks? 
Click on the eLibraryNJ banner.

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