Coles Avenue Closed in Mountainside After Tree Falls
Tree down on Coles Avenue in Mountainside closes road. Crews working on cleanup as of September 2, 2026. Drivers advi...
Mountainside, NJ
62°F · Partly cloudy
Mountainside doesn't try to be Summit. It doesn't try to be Westfield. It's quieter, smaller, and almost deliberately low-key — and for the people who live here, that's exactly the point.
Read the full guide →The borough has around 6,700 residents, making it one of the smallest municipalities in Union County. There's no downtown strip with a dozen restaurants, no train station within walking distance for most residents. What Mountainside has instead is space — real space — backed up against the Watchung Reservation, with wooded lots, winding roads, and houses that sit far enough back from the street that you can actually breathe.
Local News
Latest from Mountainside
Mountainside Honors GL Softball and Baseball Champions
Mountainside honors Governor Livingston softball and baseball teams. Softball wins first sectional title since 2010....
Mountainside Council Acts on Field, Paving, and Police
Mountainside Borough Council awards Beechwood Athletic Field contract for $797,000. Pool replacement bond and road pa...
Free Fishing Derby at Echo Lake Park in Mountainside on Sept. 19
Union County's Fall Fishing Derby for Persons with Disabilities is September 19 at Echo Lake Park in Mountainside. Ev...
Events
Upcoming in Mountainside
Arts & Culture
OPERA ON FILM
Mountainside
Street Fair/Community Event
Mountainside Car Show
Location announced soon
Community Event
Mountainside Townwide Garage Sale
Location announced soon
Local Directory
Businesses in Mountainside
Parks & Recreation
Parks in Mountainside
Real Estate
Real Estate in Mountainside
$749,999
271 Summit Rd, Mountainside Boro
3 beds · 1.1 baths
271 Summit Rd, Mountainside Boro$3,600,000
151 Wild Hedge Ln, Mountainside Boro
4 beds · 3.1 baths · 4500 sq ft
151 Wild Hedge Ln, Mountainside Boro$999,000
472 Summit Rd, Mountainside Boro
5 beds · 2.1 baths · 2745 sq ft
472 Summit Rd, Mountainside Boro
Buying or refinancing in Mountainside? Get today's rates from Mike Vrlaku — NMLS #179115
See Current Rates →Town Guide
About Mountainside
When is trash pickup in Mountainside?+
Trash and recycling schedules vary by street in Mountainside. Visit the Mountainside municipal website or contact Public Works for your specific pickup day. Most Union County municipalities offer online schedule lookup by address.
What school district covers Mountainside?+
Mountainside is served by its local public school district within Union County, NJ. The district includes elementary, middle, and high school levels. Visit the New Jersey Department of Education website or the Mountainside municipal site for enrollment information and school assignments by address.
How do I get a parking permit in Mountainside?+
Parking permits in Mountainside are issued through the municipal clerk or parking authority. Requirements and fees vary. Contact Mountainside Borough Hall or Township Hall directly, or visit the municipal website for current permit applications and residential parking zone information.
What are the best parks in Mountainside?+
Mountainside offers a variety of parks and recreational spaces maintained by the municipality and Union County Parks system. Warinanco Park, Echo Lake Park, and Nomahegan Park are among the most popular county parks. Visit ucnj.org/parks for the full county parks directory, or check the Mountainside municipal website for local park listings.
How do I contact Mountainside municipal offices?+
The Mountainside municipal offices handle permits, licenses, tax payments, and general resident services. Contact information is available on the official Mountainside municipal website. Most Union County municipalities are open Monday through Friday during standard business hours. For after-hours emergencies, contact the local police non-emergency line.
Explore Mountainside
Businesses, news, and events — all in one place.
