Mountainside ZIP Codes — Union County, NJ

There is one unique ZIP code in Mountainside, New Jersey and it is 07092. Area code: 908.

ZIP codes

3.99

sq mi land

0.03

sq mi water

908

area code

Mountainside, NJ ZIP code map

About Mountainside, NJ

Mountainside, New Jersey is a charming borough located in Union County. Known for its residential communities and beautiful scenery, this small town offers a peaceful atmosphere while being just a short drive from larger urban areas. Mountainside combines suburban living with proximity to nature, making it an attractive destination for families and outdoor enthusiasts alike.

Location & geography

Mountainside is situated in northeastern New Jersey, approximately 25 miles southwest of New York City. It is bordered by the cities of Westfield to the north, Scotch Plains to the south, and Springfield to the east, providing easy access to various local amenities. The borough spans a land area of 3.99 square miles, with a minimal water area of 0.03 square miles, showcasing mostly hilly terrain and lush landscapes.

Community & economy

The character of Mountainside is defined by its tight-knit community and family-friendly environment. The local economy is primarily driven by residential housing, with many residents commuting to nearby cities for work in various industries, including finance and healthcare. Daily life in Mountainside often includes a blend of suburban activities, such as enjoying local parks, participating in community events, and frequenting local shops and restaurants.

Transportation

Mountainside is well-connected through major highways, with Interstate 78 providing convenient access to nearby cities and regions. The nearest airport is Newark Liberty International Airport, located about 15 miles away, offering extensive domestic and international flights. Public transportation options include New Jersey Transit services that connect Mountainside to surrounding areas, enhancing the borough's accessibility.

History

Mountainside was originally established in the late 19th century and became an official borough in 1895. The town's history is closely associated with its scenic landscapes, which attracted early settlers looking for a retreat from city life. Notably, Mountainside has been a community focused on preserving its natural resources, reflected in its local parks and nature reserves.

Did you know?

One surprising fact about Mountainside is that it is home to the Watchung Reservation, an extensive nature reserve that offers hiking trails, picnic areas, and scenic views. Additionally, the borough's population enjoys a unique blend of suburban living with the recreational opportunities provided by its surrounding natural beauty.

ZIP codes for Mountainside, NJ (1)

ZIP code	City	County	Map
07092	Mountainside	Union	View map

Demographics & statistics

6,991

Population

50.1

Median age

$162,531

Median household income

$79,245

Per capita income

$719,000

Median home value

$3,501

Median monthly rent

84.4%

Home ownership

2.4%

Poverty rate

3.4%

Unemployment

2,192

Housing units

64.8%

Bachelor's or higher

Age distribution

Male Female

290

Under 5

334

172

5–9

198

139

10–14

161

215

15–19

247

20–24

113

25–34

109

451

35–44

519

411

45–54

474

274

55–59

316

278

60–64

320

442

65–74

510

227

75–84

262

157

85+

180

← Male

Female →

Age summary

Group	Count	%
Under 18	1,686	24.1%
18 and over	5,305	75.9%
65 and over	1,778	25.4%
Median age	50.1 years

Race & ethnicity

White 70.9%

Asian 10.6%

Two or more races 9.6%

Hispanic or Latino 7.8%

Black or African American 1.1%

Group	Count	%
White	5,380	70.9%
Asian	802	10.6%
Two or more races	727	9.6%
Hispanic or Latino	595	7.8%
Black or African American	81	1.1%

Household income

Under $10k 1.5%

$10k–$15k 0.7%

$15k–$25k 0.7%

$25k–$35k 0.8%

$35k–$50k 12.6%

$50k–$75k 6.7%

$75k–$100k 10.9%

$100k–$150k 15.9%

$150k–$200k 4.3%

$200k+ 46.0%

Range	% of households
Under $10k	1.5%
$10k–$15k	0.7%
$15k–$25k	0.7%
$25k–$35k	0.8%
$35k–$50k	12.6%
$50k–$75k	6.7%
$75k–$100k	10.9%
$100k–$150k	15.9%
$150k–$200k	4.3%
$200k+	46.0%
Median income	$162,531

Housing

Home values

Under $50k 0.8%

$50k–$100k 1.3%

$200k–$300k 0.9%

$300k–$500k 3.6%

$500k–$1M 83.5%

$1M+ 9.9%

Housing overview

Metric	Value
Median home value	$719,000
Median rent / month	$3,501
Owner occupied	84.4%
Renter occupied	15.6%
Vacant	2.0%
Single-family detached	93.4%
Large apartment buildings	5.1%
Mobile homes	0.0%
Median rooms	7.8
Avg household size (owned)	2.78

Year built

Era	%
2020 or later	0.0%
2010–2019	1.5%
2000–2009	4.6%
1990–1999	1.9%
1980–1989	8.5%
1970–1979	2.0%
1960–1969	25.7%
1950–1959	42.4%
1940–1949	9.0%
1939 or earlier	4.4%

Bedrooms

Size	% of units
No bedroom (studio)	5.1%
1 bedroom	0.6%
2 bedrooms	3.5%
3 bedrooms	48.1%
4 bedrooms	28.2%
5+ bedrooms	14.4%

Vehicles per household

Vehicles	% of households
No vehicle	7.3%
1 vehicle	14.7%
2 vehicles	60.1%
3 or more	18.0%

Heating fuel

Fuel type	%
Utility gas	95.0%
Electricity	1.1%
Fuel oil	3.9%

Households & families

Household type	Count	%
Married-couple family	1,889	74.5%
Cohabiting couple	45	1.8%
Male householder, no spouse	224	8.8%
Female householder, no spouse	379	14.9%
Households with children under 18	944	37.2%
Households with seniors (65+)	1,030	40.6%
Average household size	2.70

Marital status

Status	Male	Female
Never married	15.7%	19.1%
Married	76.3%	66.7%
Separated	0.0%	0.0%
Widowed	6.8%	10.2%
Divorced	1.2%	4.0%

Education

Less than 9th grade 2.9%

Some HS, no diploma 0.9%

HS graduate 15.0%

Some college, no degree 11.5%

Associate's degree 4.9%

Bachelor's degree 29.6%

Graduate / professional 35.2%

Metric	%
HS diploma or higher	96.3%
Bachelor's or higher	64.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	206	13.3%
Kindergarten	114	7.3%
Elementary school	549	35.3%
High school	470	30.2%
College / grad school	215	13.8%

Employment

Industry of employment

Education & healthcare 19.9%

Professional & management 16.5%

Finance & real estate 15.5%

Manufacturing 11.7%

Arts, food & hospitality 7.9%

Public administration 6.7%

Retail trade 5.1%

Wholesale trade 4.3%

Other services 4.3%

Construction 3.5%

Information 2.6%

Transportation & utilities 1.9%

Occupation

Category	%
Management, business & arts	59.3%
Service	4.8%
Sales & office	26.8%
Natural resources & construction	4.5%
Production & transportation	4.6%

Employment type

Type	%
Private sector	78.0%
Government	15.1%
Self-employed	6.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	53.3%
Carpool	11.3%
Public transit	11.2%
Walk	0.1%
Other means	0.0%
Avg commute (minutes)	38.5

Poverty

All people 2.4%

Under 18 years 0.0%

18 and over 3.2%

Married-couple families 2.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	41.2%
Retirement income	35.6%
Supplemental Security	0.5%
Cash public assistance	0.5%
Food stamps / SNAP	0.8%

Health indicators

Condition	%
High blood pressure	0.0%
High cholesterol	0.0%
Heart disease	6.5%
Stroke	2.7%
Asthma	7.9%
Arthritis	22.3%
Kidney disease	2.8%
Pulmonary disease	5.0%
Cancer	9.1%

Behavior / access	%
Binge drinking	15.8%
No physical activity	17.7%
Less than 7 hrs sleep	29.2%
Fair or poor health	9.1%
Poor mental health	10.5%
Poor physical health	7.6%
No health insurance	9.0%
Visited doctor (checkup)	77.6%
Visited dentist	76.5%
Cholesterol screening	0.0%
Teeth loss	7.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	279	5.3%

Disability	%
Any disability	10.0%
Under 18	0.9%
18–64 years	5.9%
65 and over	27.3%

Health insurance coverage

Type	%
Private insurance	92.8%
Public insurance	26.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	6,367	91.1%
Spanish	498	7.8%
Other Indo-European	151	2.4%
Asian & Pacific Islander	209	3.3%
Other languages	138	2.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	5,717	81.8%
Born in same state	5,644	80.7%
Born in different state	4,049	57.9%
Foreign born	73	1.0%
Naturalized citizen	1,274	18.2%
Not a US citizen	699	54.9%

Ancestry

Ancestry	Count	%
Italian	1,050	15%
Arab	451	6.5%
French	320	4.6%
Polish	203	2.9%
Irish	72	1%

Ancestry	Count	%
Dutch	69	1%
Norwegian	58	0.8%
German	13	0.2%
English	10	0.1%

Technology access

Metric	% of households
Computer access	36.3%
Internet access	93.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Mountainside, NJ have?

Mountainside, NJ has one ZIP code: 07092. Each ZIP code serves a distinct delivery area within the city and surrounding region.