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Mountainside borough, Union County, NJ

7,049 Population
4 square miles 1,763.7 people per square mile

Census data: ACS 2024 5-year unless noted

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Demographics

48 ±6.2 Median age
  • about 25 percent higher than the figure in Union County: 39.1 ±0.2
  • about 20 percent higher than the figure in New Jersey: 40.1 ±0.1
  • about 25 percent higher than the figure in United States: 38.9 ±0.1

Economics

$84,985 ±$12,007 Per capita income
  • more than 1.5 times the amount in Union County: $52,874 ±$936
  • about 1.5 times the amount in New Jersey: $54,253 ±$256
  • nearly double the amount in United States: $44,673 ±$122
$211,538 ±$63,184 Median household income
  • about double the amount in Union County: $103,202 ±$2,659
  • about double the amount in New Jersey: $103,556 ±$513
  • more than double the amount in United States: $80,734 ±$166

3.7% ±2.3% (259  ±162) Persons below poverty line
  • about two-fifths of the rate in Union County: 9.2% 52,582 (±0.5% / ±2,807)
  • about two-fifths of the rate in New Jersey: 9.7% 891,891 (±0.2% / ±14,073)
  • about one-third of the rate in United States: 12.5% 40,735,660 (±0.1% / ±275,861)

36 minutes ±3.8 (89,850  ±17,856) Mean travel time to work
  • about 20 percent higher than the figure in Union County: 30.2 7,522,000 (±0.4 / ±131,274)
  • about 20 percent higher than the figure in New Jersey: 30.5 116,289,230 (±0.1 / ±571,910)
  • about 1.4 times the figure in United States: 26.4 3,569,606,700 (±0 / ±5,719,373)

Families

2,508 ±123 Number of households
  • Union County: 203,277 ±863
  • New Jersey: 3,507,701 ±5,116
  • United States: 129,227,496 ±209,365
2.8 ±0.1 (6,912  ±28) Persons per household
  • about the same as the figure in Union County: 2.8 573,546 (±0 / ±508)
  • a little higher than the figure in New Jersey: 2.6 9,173,351
  • about 10 percent higher than the figure in United States: 2.5 326,722,430

12.8% ±9.6% (159  ±122) Women 15-50 who gave birth during past year
  • more than double the rate in Union County: 5.4% 7,341 (±0.5% / ±687)
  • more than double the rate in New Jersey: 5.2% 110,552 (±0.1% / ±2,477)
  • more than double the rate in United States: 5.1% 4,009,203 (±0% / ±20,898)

Housing

2,567 ±122 Number of housing units
  • Union County: 212,385 ±197
  • New Jersey: 3,791,354 ±469
  • United States: 143,775,360 ±10,234

$810,300 ±$48,757 Median value of owner-occupied housing units
  • about 1.5 times the amount in Union County: $529,200 ±$8,258
  • more than 1.5 times the amount in New Jersey: $454,400 ±$1,150
  • more than double the amount in United States: $332,700 ±$236

16.7% ±8.1% (1,148  ±555.2) Moved since previous year
  • more than 1.5 times the rate in Union County: 9.5% 54,314 (±0.6% / ±3,358.7)
  • more than 1.5 times the rate in New Jersey: 9.6% 889,792 (±0.1% / ±13,145.6)
  • about 1.4 times the rate in United States: 12.3% 40,747,183 (±0% / ±136,530.8)

Social

96.2% ±11.3% (4,898  ±603) High school grad or higher
  • about 10 percent higher than the rate in Union County: 86.3% 340,861 (±1.2% / ±4,698.9)
  • a little higher than the rate in New Jersey: 90.7% 5,915,947 (±0.3% / ±19,889.6)
  • about 10 percent higher than the rate in United States: 89.6% 206,814,894 (±0.1% / ±283,951.7)
67.3% ±8.6% (3,427  ±456.5) Bachelor's degree or higher
  • more than 1.5 times the rate in Union County: 38.9% 153,496 (±0.7% / ±2,854.9)
  • about 1.5 times the rate in New Jersey: 43.6% 2,845,933 (±0.2% / ±12,951.6)
  • nearly double the rate in United States: 35.7% 82,363,217 (±0.1% / ±182,857.7)

N/A Persons with language other than English spoken at home

18.9% ±6.7% (1,329  ±472) Foreign-born population
  • about three-fifths of the rate in Union County: 33.6% 194,636
  • about 80 percent of the rate in New Jersey: 23.9% 2,236,554
  • about 1.3 times the rate in United States: 14.1% 47,349,080

4.4% ±2% (242  ±108) Population with veteran status
  • more than 1.5 times the rate in Union County: 2.5% 11,260 (±0.2% / ±831)
  • about 20 percent higher than the rate in New Jersey: 3.7% 273,031 (±0.1% / ±4,211)
  • about two-thirds of the rate in United States: 6.2% 16,185,883 (±0% / ±45,251)
242 Total veterans ±108 220 Male ±101 22 Female ±37

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