In 2017, Mountainside, NJ had a population of 6.91k people with a median age of 48.6 and a median household income of $129,405. Between 2016 and 2017 the population of Mountainside, NJ grew from 6,835 to 6,907, a 1.05% increase and its median household income grew from $122,500 to $129,405, a 5.64% increase.
The population of Mountainside, NJ is 85.2% White Alone, 6.98% Asian Alone, and 3.72% Hispanic or Latino. 16.1% of the people in Mountainside, NJ speak a non-English language, and 96.1% are U.S. citizens.
The median property value in Mountainside, NJ is $619,500, and the homeownership rate is 91.2%. Most people in Mountainside, NJ commute by Drove Alone, and the average commute time is 30.3 minutes. The average car ownership in Mountainside, NJ is 2 cars per household.