Mountainside, NJ
Population 6,967 · New Jersey
About Mountainside, NJ
Mountainside is a small community in New Jersey with a population of 6,967 residents. The median household income is $210,100 per year, which is above the national average. The median age in Mountainside is 48.7 years.
Housing in Mountainside has a median home value of $755,600 and median monthly rent of $3,501. Of the 2,616 total housing units, the majority are owner-occupied, with 2,206 owner-occupied and 334 renter-occupied units.
The unemployment rate in Mountainside is 2.1% and the poverty rate is 2.8%. 66.2% of residents hold a bachelor's degree or higher. The average commute time is 38.9 minutes.
How Mountainside Ranks in New Jersey
Cost of Living in Mountainside, NJ
Compared to national averages, Mountainside has a median household income of $210,100 (180% above the national median of $75,149). Home values average $755,600, which is 209% above the national median. Monthly rent at $3,501 is 201% above the US average of $1,163. Within New Jersey, Mountainside's income is 82% above the state average of $115,667, and home values are 61% above the state median of $469,644.
Why Live in Mountainside, NJ?
Mountainside offers a strong local economy with a median household income of $210,100, well above the national average, and a strong job market with an unemployment rate of just 2.1%, and a well-educated community where 66.2% of residents hold a bachelor’s degree or higher. Additionally, the city features a low poverty rate of 2.8%, better than the national average.
Potential considerations include a competitive housing market where the typical home costs $755,600. However, Mountainside’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Mountainside has a population of 6,967 with a median age of 48.7 years. Compare Mountainside with other cities to see how it stacks up, or explore all cities in New Jersey.
Similar Cities Near Mountainside
Cities in New Jersey with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Stratford | 6,965 | $100,735 | $238,200 | Compare |
| Linwood | 6,954 | $135,904 | $351,100 | Compare |
| Milltown | 6,994 | $119,958 | $423,000 | Compare |
| Midland Park | 6,996 | $140,063 | $586,200 | Compare |
| Lincroft | 6,901 | $168,945 | $719,000 | Compare |
| Barrington | 7,047 | $84,334 | $244,400 | Compare |
| Allendale | 6,820 | $156,992 | $764,600 | Compare |
| Keyport | 7,159 | $79,036 | $374,800 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in New Jersey
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Mountainside
What is the population of Mountainside, NJ?
The population of Mountainside, NJ is 6,967 according to the latest Census data.
What is the median household income in Mountainside?
The median household income in Mountainside, NJ is $210,100 per year.
What is the median home value in Mountainside?
The median home value in Mountainside, NJ is $755,600.
What is the average rent in Mountainside?
The median monthly rent in Mountainside, NJ is $3,501.
What is the unemployment rate in Mountainside?
The unemployment rate in Mountainside, NJ is 2.1%.