ZIP Code 07092
About Mountainside
Mountainside is a borough in Union County, in the U.S. state of New Jersey. The borough is located on a ridge in northern-central New Jersey, within the Raritan Valley and Rahway Valley regions in the New York metropolitan area. As of the 2020 United States census, the borough's population was 7,020, an increase of 335 (+5.0%) from the 2010 census count of 6,685, which in turn reflected an increase of 83 (+1.3%) from the 6,602 counted in the 2000 census.
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Area Profile
US Census (ACS 5-year · Gazetteer)
6,967
population
$210,100
median household income
1,744
people / sq mi
$755,600
median home value
$3,501
median gross rent
48.7
median age
2,616
housing units
2,540
households
4.0
land area (sq mi)
Key places in 07092
- Echo Lake Park park
- Watchung Reservation park