Mountainside is a city located in Union County New Jersey. Mountainside has a 2024 population of 6,912. Mountainside is currently declining at a rate of -0.32% annually and its population has decreased by -1.29% since the most recent census, which recorded a population of 7,002 in 2020.
The average household income in Mountainside is $214,930 with a poverty rate of 2.41%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Mountainside is 50.1 years, 52 years for males, and 49.4 years for females.
According to the most recent ACS, the racial composition of Mountainside was:
White
Asian
Two or more races
Black or African American
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
---|---|---|---|---|
All | 2,537 | 2.7 | 84.4 | 15.6 |
Married | 1,889 | 3.15 | 90.4 | 9.6 |
Non Family | 524 | 1.13 | 59.2 | 40.8 |
Female | 112 | 2.46 | 100 | 0 |
Male | 12 | 2.75 | 100 | 0 |
3.09
Average Family Size
2.7
Average Household Size
84.4%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
76.72% of Mountainside residents speak only English, while 23.28% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 9.02% of the population.
rate
2.41%
Overall Poverty Rate
2.58%
Male Poverty Rate
2.27%
Female Poverty Rate
The race most likely to be in poverty in Mountainside is White, with 3.02% below the poverty level.
The race least likely to be in poverty in Mountainside is Asian, with 1.13% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 1.53%, and for those that did not work, the poverty rate was 6.86%.
Married
Widowed
Divorced
Separated
NeverMarried
71.2%
Overall Marriage Rate
76.3%
Male Marriage Rate
66.7%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
6.45%
Veteran Poverty Rate
50.18%
Veteran Disability Rate
LaborForceParticipation
57.6%
Labor Force Participation
55.6%
Employment Rate
3.4%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
57.92%
Born in Mountainside
81.78%
Native Born
18.22%
Foreign Born
8.22%
Non Citizen
10%
Naturalized
81.78% of Mountainside residents were born in the United States, with 57.92% having been born in New Jersey. 8.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.
Year | Population | Growth | Growth Rate |
---|---|---|---|
2029 | 6,799 | -23 | -0.34% |
2028 | 6,822 | -22 | -0.32% |
2027 | 6,844 | -23 | -0.33% |
2026 | 6,867 | -22 | -0.32% |
2025 | 6,889 | -23 | -0.33% |
2024 | 6,912 | -22 | -0.32% |
2023 | 6,934 | -23 | -0.33% |
2022 | 6,957 | -65 | -0.93% |
2021 | 7,022 | 20 | 0.29% |
2020 | 7,002 | 114 | 1.66% |
2019 | 6,888 | 22 | 0.32% |
2018 | 6,866 | 25 | 0.37% |
2017 | 6,841 | 17 | 0.25% |
2016 | 6,824 | 38 | 0.56% |
2015 | 6,786 | 10 | 0.15% |
2014 | 6,776 | -6 | -0.09% |
2013 | 6,782 | 49 | 0.73% |
2012 | 6,733 | 21 | 0.31% |
2011 | 6,712 | 44 | 0.66% |
2010 | 6,668 | 0 | 0% |
2000 | 6,602 | -55 | -0.83% |
1990 | 6,657 | -461 | -6.48% |
1980 | 7,118 | -402 | -5.35% |
1970 | 7,520 | 1,195 | 18.89% |
1960 | 6,325 | -474 | -6.97% |