Mountainside, NJ Population

Overview

7,003

Total Population

51.0

Median age

51.11%

Female population %

95.7:100

Gender ratio (M:F)

0-4 years

Largest age group

85.1

Total dependency ratio

White

Largest racial group

876

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Mountainside's population is old compared to the rest of the country:

The median age in Mountainside is 51.0, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Mountainside's population under 18 was 23.28%, compared to the 22.51% nationwide.
Mountainside's elderly or the senior population (over 65 age) was 27.53% as compared to 16.04% nationwide.
Of the total population in Mountainside, 18.45% were under the age of 15, 10.18% aged 15 to 29, 43.84% aged 30 to 64, 22.30% aged 65 to 84, and 5.23% were 85 years of age and older.

There are 155 more females than males in Mountainside:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.11% females and 48.89% males in Mountainside, NJ.
The Mountainside, NJ gender ratio is 95.7:100 i.e. 95.7 men to 100 women (0.957).
For male population, the largest age group is 60-64 years with a population of 332.
For the female population, the largest age group is 0-4 years with a population of 469.

Mountainside's population has become increasingly diverse:

Racial distribution of Mountainside population: 77.28% are White, 2.30% are Black or African American, 10.14% are Asian, 0.89% are some other race and 9.40% are multiracial.
Mountainside's racial breakdown clearly shows that there is an absolute majority of White population in the borough.
By ethnicity, 876 is Hispanic or Latino (of any race), and 6,127 (87.49% of the total population) is Non-Hispanic.
The largest racial group in Mountainside is White with a population of 5,412 (77.28% of the total population).

Mountainside's population has already reached its peak and is showing a trend of decline:

The peak population was 7,022 in the year 2021
From 2000 to 2010, Mountainside's population increased by 61 (0.92%), as compared to the national growth of 9.63%.
From 2010 to 2020, Mountainside's population increased by 334 (5.01%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Mountainside's population was lowest in year 2007 at 6,524.