Mountainside borough, New Jersey
Population estimates, July 1, 2025, (V2025) 7,346
People
Population
Population estimates, July 1, 2025, (V2025) 7,346
Population estimates, July 1, 2024, (V2024) 7,228
Population estimates base, April 1, 2020, (V2025) 7,039
Population estimates base, April 1, 2020, (V2024) 7,024
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 4.4%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) 2.9%
Population, Census, April 1, 2020 7,020
Population, Census, April 1, 2010 6,685
Age and Sex
Persons under 5 years, percent 7.6%
Persons under 18 years, percent 21.8%
Persons 65 years and over, percent 24.2%
Female persons, percent 50.5%
Race and Hispanic Origin
White alone, percent 74.0%
Black alone, percent(a) 2.2%
American Indian and Alaska Native alone, percent(a) 0.0%
Asian alone, percent(a) 11.8%
Native Hawaiian and Other Pacific Islander alone, percent(a) 0.0%
Two or More Races, percent 10.1%
Hispanic or Latino, percent(b) 13.2%
White alone, not Hispanic or Latino, percent 71.3%
Population Characteristics
Veterans, 2020-2024 242
Foreign-born persons, percent, 2020-2024 18.9%
Housing
Housing Units, July 1, 2025, (V2025) X
Owner-occupied housing unit rate, 2020-2024 87.9%
Median value of owner-occupied housing units, 2020-2024 $810,300
Median selected monthly owner costs - with a mortgage, 2020-2024 $3,717
Median selected monthly owner costs - without a mortage, 2020-2024 $1,500+
Median gross rent, 2020-2024 $3,500+
Building Permits, 2025 X
Families & Living Arrangements
Households, 2020-2024 2,508
Persons per household, 2020-2024 2.76
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 83.3%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 24.9%
Computer and Internet Use
Households with a computer, percent, 2020-2024 100.0%
Households with a broadband Internet subscription, percent, 2020-2024 99.3%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 96.2%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 67.3%
Health
With a disability, under age 65 years, percent, 2020-2024 5.1%
Persons without health insurance, under age 65 years, percent 3.3%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 60.4%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 53.4%
Total accommodation and food services sales, 2022 ($1,000)(c) 29,948
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) D
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 23,155
Total retail sales, 2022 ($1,000)(c) 32,368
Total retail sales per capita, 2022(c) $4,666
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 36.0
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $211,538
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $84,985
Persons in poverty, percent 3.7%
Businesses
Businesses
Total employer establishments, 2023 X
Total employment, 2023 X
Total annual payroll, 2023 ($1,000) X
Total employment, percent change, 2022-2023 X
Total nonemployer establishments, 2023 X
All employer firms, Reference year 2023 X
Male-owned employer firms, Reference year 2023 X
Female-owned employer firms, Reference year 2023 X
Minority-owned employer firms, Reference year 2023 X
Nonminority-owned employer firms, Reference year 2023 X
Veteran-owned employer firms, Reference year 2023 X
Nonveteran-owned employer firms, Reference year 2023 X
Geography
Geography
Population per square mile, 2020 1,756.8
Population per square mile, 2010 1,668.0
Land area in square miles, 2020 4.00
Land area in square miles, 2010 4.01
FIPS Code 3448510