Mountainside, Borough in Union County, New Jersey, US
Mountainside is a borough in Union County, New Jersey situated on elevated terrain in the northern-central part of the state near the New York metropolitan area. The community features residential neighborhoods, parks, recreational facilities including a public pool, and the historic Deacon Andrew Hetfield House.
The area was originally part of Westfield Township before separating to become an independent borough in 1895 with its own local government. This separation marked the start of its growth as an independent community within Union County.
The Deacon Andrew Hetfield House shows how early settlers lived and worked through its rooms and furnishings from the 1700s. Visitors can see the objects and spaces that defined daily life for families in that era.
The community is best explored on foot, especially if you want to see the parks and green spaces scattered throughout the area. Access is straightforward and the neighborhood is welcoming to visitors, making for an easy walk around the residential streets.
During the Cold War in the late 1950s, a Nike missile battery was stationed here as part of America's air defense system. This military installation has long since disappeared from view, leaving little visible trace of that era today.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
