Welcome to the Mountainside Public Library

Enjoy the start of summer viewing at a special price!

From Friday, June 24th through Friday, July 1st, enjoy a 3rd DVD for free when you check out 2 at the regular price.

At "3 for the price of 2", think of all the movies you could watch!


On Your Mark, Get Set, Read!

 Summer Reading  Programs

Activities, Story Time, and Book Groups for all age groups

 Click here for more details






Homebound Delivery Service

For Mountainside Residents who are unable to come to the library because of
long-term illness or disability

 Call the library for more information, or to Volunteer

Thursday, July 14





Login to your account 


Library Hours

Monday: 10am to 9pm

Tuesday: 10am to 9pm

Wednesday: 10am to 5pm

Thursday: 10am to 9pm

Friday: 10am to 5pm

*Saturday: 10am to 5pm

Sunday: Closed

*Closed Saturdays from

July through Labor Day

Holiday Closings 2016
January 1: New Years Day

January 2: Day after New Year's
January 18: MLK Birthday
February 15: Presidents' Day
March 25: Good Friday
May 30: Memorial Day
July 4: Independence Day 
September 5: Labor Day
October 10: Columbus Day
November 11: Veterans' Day
November 24: Thanksgiving Day
November 25: Day after Thanksgiving
December 24: Christmas Eve
December 26: Day after Christmas
December 31: New Years Eve
January 2: New Year's Day (2017, Observed)

Mountainside Public Library
1 Constitution Plaza
Mountainside, NJ  07092






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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...