Browse / United States / New Jersey / Mountainside
Mountainside
New Jerseyborough
Mountainside
Total population
7,049
Median home value
$810,300
Bachelor's+
Median income
$211,538
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
- Wind Advisory · ModerateWind Advisory issued September 25 at 2:48PM EDT until September 27 at 6:00AM EDT by NWS Upton NY
Source: NOAA National Weather Service.
City facts
Facts from Wikidata (CC0).
Overview
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.
Read more on WikipediaHistory & geography
History
In 1958, part of 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. Remnants of the control site are located adjacent to Governor Livingston High School, while the part of Watchung Reservation that was cleared in order to accommodate the missile launchers became the Watchung Stables.
Geography
According to the United States Census Bureau, the borough had a total area of 4.04 square miles (10.47 km2), including 4.00 square miles (10.35 km2) of land and 0.05 square miles (0.12 km2) of water (1.11%).
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Mountainside, NJ from NOAA NWS API.
Air quality
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Walkability
Amenities nearby
Wildlife & biodiversity
Schools
Earthquake history
Photos
Sights & places nearby
Notable people from here











People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about Mountainside

Search results from Open Library.
Recent natural events nearby
Ground air-quality sensors
Recently spotted species









Research-grade observations from iNaturalist (within ~15 mi).
Nearest stream gauge
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • Wikidata
- • iNaturalist
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • Open Library