• Be Prepared

    Our Borough encourages all Mountainside residents to sign up for Union County First Alert program and receive instant notification of events to your email or mobile phone

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  • Serving Seniors

    Mayor Paul Mirabelli participated in Sage Eldercare’s March for Meals campaign to generate public awareness about senior hunger in our area and celebrate the invaluable services provided by SAGE Eldercare and Meals on Wheels.

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  • Overnight Parking

    No parking on any Borough Streets from 2:30 to 5:30 a.m., Also, No commercial vehicles, snowplows or boats allowed parked in any driveway overnight.

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  • Volunteers Needed

    Are you interested in becoming a firefighter? Mountainside Volunteer Fire Department is looking for members call 908-233-1047 for additional information.

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Community Organizations

Get the latest information on your local community organizations' events

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Public Works

Public Works plays an important role in protecting the public's health and safety

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Recreation Pool

Recreation provides a variety of programs and activities for borough residents of all ages

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Engineering Construction & Zoning

Engineering assists and protects the public by means of guidance and inspection.

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Latest News Blog & Twitter

2014 Department Reports

Read about the latest activities and accomplishments our municipal departments have achieved throughout 2014.

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Mayor Mirabelli's Address

View Mayor Paul Mirabelli’s address to residents at the January 6th 2015, reorganization meeting.

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Community Pool

The Mountainside Community Pool is a beautiful, barrier-free facility nestled off Mountain Avenue adjacent to Echo Lake Park.


  • Sun and Fun:
    It offers plenty of sun and swimming for the active set, as well as lots of cool, refreshing shade and a relaxed pace of summer life.
  • World Class Facilities:
    The facility includes a 50-meter Olympic pool, diving tank, zero-depth wading pool, two water slides, basketball courts, baby changing area, men’s and women’s locker rooms, snack bar, picnic grove, benches, and grassy areas to sunbathe

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Community Support

  • Senior Citizens
  • Library

seniorThere are many and varied services available to Senior Citizens in Mountainside.

Most of the programs are county or statewide and not limited to Mountainside residents. In New Jersey, every county has an office on Aging.

These agencies supply information and referral services within their county. Additional information is available from Senior Citizen Coordinator, Kim Moriak at (908) 232-4406.

We have a lot to offer and hope you'll take time to explore our collection. In addition to our online catalog and array of electronic databases, we have a terrific photo gallery that chronicles the last several years of library history. And many people find our schedule of programs and activities a real convenience.

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Latest Pictures