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Welcome to Mountainside, NJ.

Mountainside, a small township of only 4 square miles and approximately 2,500 households, was ranked by New Jersey Magazine as one of the best places to live in both 2008 and 2010. The borough has a quaint three-block retail district, including a bakery, a deli, a grocery store, an antique shop, a florist, a bank, a couple of restaurants, and a post office—and one of the lowest tax rates in Union County. Mountainside boasts top-rated schools (including Governor Livingston High School in Berkeley Heights, as part of a sending/receiving relationship with the Berkeley Heights Public Schools) and NJ Transit bus transportation to both Newark and New York City. Mountainside is also home to a portion of Echo Lake Park, Union County’s Trailside Nature & Science Center, and numerous playfields and hiking trails within the larger Watchung Reservation.

What we love about Mountainside, NJ.

  • Quiet, suburban feel
  • 2000+ acres of scenic, preserved nature 
  • Top-rated Schools

Living In Mountainside, NJ


People and Lifestyle

Mountainside is located in Union County and was voted one of the best places to live in New Jersey. With a population of just over 7,000 people, Mountainside also possesses a highly-rated school system and quick access to I78 and Rt 22. Living in Mountainside offers residents a sparse suburban feel with a lot of restaurants and parks and the vast majority of residents own their homes.


Dining & Retail

Mountainside is also home to some of the best food and beverage options in Union County.  Meet your friends at the bar, or sit down to a fabulous meal at Publick House, a gastropub with an eclectic and evolving menu of New American foods, craft beers, and inspired cocktails. Mazella’s Marketplace is an Italian gourmet market, with delicious sandwiches, a full deli & butcher case, and hot & cold options to take home for dinner. For unmatched wine service, stop into Vine Republic. Their wine selection and expertise will make this your go-to shop for wines, beers, and spirits.

Things To Do In Mountainside, NJ

The residents of Mountainside have a wide variety of options when it comes to outdoor activities. The Watchung Reservation is 2000+ acres of preserved nature, filled with winding trails, streams,  picnic tables, and horse stables. The Trailside Nature & Science Center offers organized activities and hikes for everyone. Sign up in the fall for a spooky night time, moonlit walk.  With its lovely rolling hills and scenic spots, Echo Lake Park is a great place for a picnic. After you eat, rent a swan boat, drop a fishing line, toss a frisbee, or take your furry friends to the dog park.

Schools In Mountainside, NJ

  • Beechwood School (Grades preK - 2)
  • Deerfield  (Grades 3-8)
  • Governor Livingston High School  (Grades 9-12)
  • Union County Vocational-Technical School (Grades 9-12)

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