HomeNew JerseyUnion CountyMountainside borough
Mountainside borough, New Jersey: commercial real estate data.
Mountainside borough is a Census borough of 7,049 people across 4.00 square miles of land, in Union County. Median household income is $211,538, 87.9 percent of occupied homes are owned, and the SBA record carries 20 7(a) approvals to borrowers here worth $5.0 m.
76 sourced place values · tier FULL · 8 sections · underlined figures are computed by MMCG Analytics, not published by the agency
Mountainside
What Mountainside is
- Census place typeborough
- Land area4 sq mi
- Water area0.05 sq mi
- Population per square mile of land1,764
- County holding the largest share of its areaUnion County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Mountainside
How many people live in Mountainside
- Population7,049
- Median age48.0
- Population under 181,535
- Share under 1821.8 percent
- Population 65 and over1,709 plus or minus 411
- Share 65 and over24.2 percent plus or minus 5.8
- Households2,508
- Family households2,086
- Share of households that are families83.2 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Mountainside
Income and work in Mountainside
- Median household income$211,538 plus or minus $63,184
- Per capita income$84,985
- Civilian labor force3,471
- Employed3,351
- Unemployed120 plus or minus 63
- Unemployment rate3.5 percent plus or minus 1.8
- Adults 25 and over5,094
- Adults 25 and over with a high school diploma or higher96.2 percent
- Adults 25 and over with a bachelor degree or higher67.3 percent
- Adults 25 and over with a graduate degree38.0 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Mountainside
Housing in Mountainside
- Housing units2,567
- Occupied units2,508
- Vacant units59 plus or minus 70
- Vacancy rate2.3 percent plus or minus 2.7
- Owner occupied2,204
- Renter occupied304 plus or minus 206
- Ownership rate87.9 percent
- Median owner-occupied home value$810,300
- Median gross rent, monthly$3,501
- Annual rent as a share of median income19.9 percent
- Single family units2,530
- Share single family98.6 percent
- Units in buildings of two or more37 plus or minus 46
- Share in buildings of two or more1.4 percent plus or minus 1.8
- Mobile homes0
- Median year structure built1957
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Mountainside
How Mountainside gets to work
- Workers 16 and over who commute2,494
- Commuting under 15 minutes607 plus or minus 214
- Share commuting under 15 minutes24.3 percent plus or minus 7.9
- Commuting 30 minutes or more1,392 plus or minus 288
- Share commuting 30 minutes or more55.8 percent
- Drove alone54.2 percent
- Carpooled10.8 percent plus or minus 5.7
- Public transport8.1 percent plus or minus 3.9
- Walked1.4 percent plus or minus 1.1
- Worked from home25.1 percent plus or minus 10.2
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Mountainside
SBA loans in Mountainside (7(a))
- Approvals20
- Gross approval$4,978,300
- Average approval$248,915
- Median approval$200,000
- Ninetieth percentile approval$604,000
- Largest approval$636,000
- Jobs supported71
- Jobs per approval3.5
- Loans with a final outcome2
- Paid in full0
- Charged off2
- Median term120 months
- Share on real estate terms of 20 years or more10.0 percent
- Share to franchises25.0 percent
- Distinct lenders13
- Distinct industries by NAICS16
A charge-off rate is not published here. only 2 resolved loans, too few to publish a rate, and a rate over that few outcomes would move several points on one loan.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Mountainside
SBA loans in Mountainside (504)
- Approvals5
- Gross approval$6,207,000
- Average approval$1,241,400
- Median approval$829,000
- Largest approval$2,758,000
- Jobs supported124
- Loans with a final outcome1
- Charged off0
- Median term240 months
- Distinct CDCs3
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Union County, not Mountainside
Union County context, not Mountainside figures
These are Union County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Mountainside measurements.
- Establishments in Union County14,276
- Employment at those establishments, Union County208,505
- Covered employment, Union County229,010
- Average annual pay, Union County$84,322
- Average weekly wage, Union County$1,622
- Housing units permitted, Union County1,696
- Of those, single family, Union County212
- County product, 2024, Union County$51,947,451,000
- County product change over the prior year, Union County5.0 percent
- Average income of an arriving household, Union County$118,079
Every figure in this section is published for Union County as a whole and is not a measurement of Mountainside. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- This place is not listed as a community in the FEMA Community Status Book, so no NFIP participation or CRS class is shown.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
Mountainside questions, answered from the record.
How many people live in Mountainside, New Jersey?
7,049, in 2,508 households. Mountainside borough covers 4.00 square miles of land, which is 1,764 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Mountainside in?
Union County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Mountainside?
$211,538. The median owner-occupied home is valued at $810,300. Median gross rent is $3,501 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Mountainside businesses?
20 7(a) approvals totalling $5.0 m, across 13 lenders, median approval $200,000, plus 5 504 approvals worth $6.2 m. These count approvals to borrowers whose address is in Mountainside, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Mountainside borrowers get paid back?
No rate is published for Mountainside. only 2 resolved loans, too few to publish a rate, and a percentage over that few outcomes would move several points on a single loan. The counts are shown instead.
Are the county figures on this page Mountainside figures?
No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Union County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Mountainside.
Is zoning published for Mountainside?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.