Mountainside, New Jersey

About Mountainside

Mountainside is a close-knit town in northern New Jersey counting 7,228 people who proudly call it home.

Officially, Mountainside is a borough — a form of municipal government most common in the Northeast. The community covers 4 square miles, giving it a balanced suburban layout with room to breathe at roughly 1,807 residents per square mile.

📰 Mountainside News Today

• Sweet Success: Mountainside Lemonade Stand Raises Money for Community FoodBank. TAPinto · Aug 17
• Drunk Driver Arrested In Fatal Hit-And-Run Crash With Bicyclist On Route 22 In Mountainside: Police Patch · Aug 12
• Bicyclist Killed In Crash With Vehicle In Mountainside News12 | New Jersey · Aug 7
• Somerset County man charged in fatal Route 22 hit-and-run that killed bicyclist WRNJ Radio · Aug 13
• Driver arrested after bicyclist killed in N.J. crash NJ.com · Aug 7

Live headlines via Google News — updates through the day.

What Makes Mountainside Unique

• The only place in America named Mountainside — a truly one-of-a-kind name among 32,000+ US communities.
• Positioned in northern New Jersey, convenient to the region's corridors and crossings.
• Part of the fabric of New Jersey — one of 700 recognized communities statewide.

Why People Love It Here

• The sweet spot: real amenities without big-city congestion.
• Local businesses and schools anchored by a stable resident base of 7,228.
• Well connected: 3+ neighboring communities within 3 miles.

🍽️ Where to Eat in Mountainside

• Echo Tap & Grille — american
• Outback Steakhouse — american
• Arirang — asian
• Famous Dave's — barbecue

Local spots mapped by the OpenStreetMap community.

🎡 Fun Things to Do

• Trailside Nature and Science Center · Museum
• Deacon Andrew Hetfield House · Museum

Attractions mapped by the OpenStreetMap community.

🏞️ Parks & Outdoors in Mountainside

• Watchung Reservation reviews ★
• Boy Scout Camping Area, Watchung Reservation reviews ★
• Brightwood Park reviews ★
• Demonstration Gardens of the Master Gardeners of Union Count · Garden reviews ★
• Echo Lake Park reviews ★
• Irwin Playground reviews ★

Parks mapped by the OpenStreetMap community · "reviews" opens each park's live Google reviews.

🏫 Schools in Mountainside

• Beechwood School
• Deerfield Elementary School

Public schools, U.S. Dept. of Education (NCES) 2023–24 directory.

⚡ Quick Facts

🗺️ Map of Mountainside

🏘️ Nearby Communities