Mountainside

Borough in Union County, New Jersey

View of Mountainside, New Jersey
Photo: Tomwsulcer · CC0

Mountainside is a borough in Union County, New Jersey, with 7,020 residents (2020 Census). It sits at 233 ft (71 m) above sea level. The nearest town is Springfield, 1.8 miles NE.

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.

Mountainside was incorporated as a borough on September 25, 1895, from portions of Westfield Township, based on the results of a referendum held the previous day.

New Jersey Monthly magazine ranked Mountainside as its 16th best place to live in its 2008 rankings of the "Best Places To Live" in New Jersey, as well as eighth in the 2010 list.

Text: Wikipedia · CC BY-SA 4.0

Mountainside weather: 7-day forecast

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Source: National Weather Service (NOAA).

Live webcams in Mountainside

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Webcams: Windy.com

Living in Mountainside

Median household income
$211,538
Median home value
$810,300
Median rent
$3,501/mo
Median age
48
Cost of living and demographics of Mountainside ›

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Map of Mountainside

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Mountainside Street View

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Mountainside, NJ population

Mountainside had 7,020 residents in the 2020 Census.

2020 Census7,020
Density1,757 per sq mi (678 per km²)

Source: U.S. Census Bureau, Decennial Census.

Mountainside at a glance

StateNew Jersey (NJ)
CountyUnion County
TypeBorough
Population7,020 (2020)
Land area4.00 sq mi (10.4 km²)
Water area0.05 sq mi (0.12 km²)
Elevation233 ft (71 m)
Coordinates40.6807° N, 74.3603° W
ZIP codes07092, 07081
Official websitemountainside-nj.com
Census code (GEOID)3448510

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Mountainside

Straight-line distance between town centers.

Frequently asked questions about Mountainside

What county is Mountainside in?

Mountainside is in Union County, New Jersey.

What is the population of Mountainside, NJ?

7,020 people lived in Mountainside at the 2020 Census.

What is the ZIP code of Mountainside, NJ?

The main ZIP code is 07092. Other ZIP codes: 07081.

What is the elevation of Mountainside?

233 feet (71 m) above sea level.

What towns are near Mountainside?

Springfield (1.8 mi), Westfield (2.2 mi), Summit (2.4 mi), New Providence (2.7 mi), Garwood (2.8 mi).

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