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Mountainside

Learn more about Mountainside

#9 in Best Places to Raise a Family in Union County

Mountainside is a township in Unioon County and a suburb of New York City located on a ridge in northern-central New Jersey, within the Raritan Valley and Rahway Valley regions in the New York metropolitan. Living in Mountainside offers residents a sparse suburban feel and most residents own their homes, taking advantage of it’s many restaurants, parks and highly rated public schools


In 1958, part of a Nike missile battery (NY-73) was installed, with the missile launchers themselves in Mountainside while the radar station was installed in Berkeley Heights. It remained in operation until 1963 and remnants of the site are located adjacent to Governor Livingston High School. 

As of the 2010 United States Census, the borough’s population was 6,685, reflecting an increase of 83 (+1.3%) from the 6,602 counted in the 2000 Census, which had in turn declined by 55 (-0.8%) from the 6,657 counted in the 1990 Census.

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Mountainside
Market Report

Best Local Businesses

Browse through the top rated businesses that Mountainside has to offer!