Mount Arlington ZIP Codes — Morris County, NJ

There is one unique ZIP code in Mount Arlington, New Jersey and it is 07856. Area code: 973/862.

ZIP codes

3.43

sq mi land

0.72

sq mi water

973/862

area code

Mount Arlington, NJ ZIP code map

About Mount Arlington, NJ

Mount Arlington, New Jersey, is a charming borough located in Morris County. Known for its scenic beauty and rich local history, this small community offers a peaceful suburban lifestyle. With a close-knit atmosphere and friendly residents, Mount Arlington is an ideal place for families and individuals alike.

Location & geography

Mount Arlington covers a total area of 3.43 square miles, with 0.72 square miles of that being water. It is situated near several notable cities; Roxbury Township is just to the northwest, while Parsippany-Troy Hills can be found about 11 miles away. The borough features picturesque terrain, including the beautiful Lake Hopatcong, which enhances its natural charm.

Community & economy

The character of Mount Arlington is defined by its strong sense of community and numerous local events that draw residents together. Predominantly residential, the community has a mix of small businesses and services catering to the daily needs of its residents. Daily life in Mount Arlington often involves outdoor activities, especially around the lake, making it a recreational haven.

Transportation

Major highways such as Route 80 and Route 46 provide convenient access to Mount Arlington, allowing for easy travel to neighboring cities and beyond. The closest airports include Morristown Municipal Airport and Newark Liberty International Airport, both of which facilitate regional and international travel. Public transportation options, including NJ Transit, connect residents to larger metropolitan areas.

History

Mount Arlington was founded in the late 19th century and has a storied past tied to the development of the surrounding region. Originally a popular resort destination, the borough evolved as residential development expanded, with tourism remaining a key industry throughout its history. Notable events include the establishment of recreational facilities that continue to serve the community today.

Did you know?

One surprising fact about Mount Arlington is its access to Lake Hopatcong, which is New Jersey's largest freshwater lake. This location not only offers beautiful views but also provides various recreational opportunities for residents and visitors alike.

ZIP codes for Mount Arlington, NJ (1)

ZIP code	City	County	Map
07856	Mount Arlington	Morris	View map

Demographics & statistics

4,429

Population

46.0

Median age

$95,398

Median household income

$51,611

Per capita income

$381,600

Median home value

$2,299

Median monthly rent

66.2%

Home ownership

4.8%

Poverty rate

3.5%

Unemployment

1,729

Housing units

42.3%

Bachelor's or higher

Age distribution

Male Female

123

Under 5

138

122

5–9

137

10–14

103

15–19

116

130

20–24

147

298

25–34

336

174

35–44

196

301

45–54

340

182

55–59

205

126

60–64

143

275

65–74

311

106

75–84

119

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	765	17.3%
18 and over	3,664	82.7%
65 and over	973	22.0%
Median age	46.0 years

Race & ethnicity

White 74.6%

Hispanic or Latino 7.1%

Black or African American 6.3%

Two or more races 4.1%

Other race 4.1%

Asian 2.3%

American Indian / Alaska Native 1.5%

Group	Count	%
White	3,556	74.6%
Hispanic or Latino	339	7.1%
Black or African American	301	6.3%
Two or more races	197	4.1%
Other race	197	4.1%
Asian	108	2.3%
American Indian / Alaska Native	70	1.5%

Household income

Under $10k 1.5%

$15k–$25k 2.3%

$25k–$35k 11.4%

$35k–$50k 4.9%

$50k–$75k 18.8%

$75k–$100k 12.1%

$100k–$150k 26.1%

$150k–$200k 11.3%

$200k+ 11.6%

Range	% of households
Under $10k	1.5%
$15k–$25k	2.3%
$25k–$35k	11.4%
$35k–$50k	4.9%
$50k–$75k	18.8%
$75k–$100k	12.1%
$100k–$150k	26.1%
$150k–$200k	11.3%
$200k+	11.6%
Median income	$95,398

Housing

Home values

Under $50k 0.9%

$150k–$200k 1.6%

$200k–$300k 20.4%

$300k–$500k 57.4%

$500k–$1M 17.8%

$1M+ 2.0%

Housing overview

Metric	Value
Median home value	$381,600
Median rent / month	$2,299
Owner occupied	66.2%
Renter occupied	33.8%
Vacant	19.4%
Single-family detached	45.4%
Large apartment buildings	26.0%
Mobile homes	0.0%
Median rooms	5.5
Avg household size (owned)	2.41

Year built

Era	%
2020 or later	0.0%
2010–2019	13.3%
2000–2009	14.9%
1990–1999	18.0%
1980–1989	9.2%
1970–1979	12.6%
1960–1969	15.1%
1950–1959	2.9%
1940–1949	5.2%
1939 or earlier	9.0%

Bedrooms

Size	% of units
No bedroom (studio)	3.2%
1 bedroom	13.3%
2 bedrooms	42.9%
3 bedrooms	20.0%
4 bedrooms	19.4%
5+ bedrooms	1.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.7%
1 vehicle	42.1%
2 vehicles	39.2%
3 or more	18.0%

Heating fuel

Fuel type	%
Utility gas	64.0%
Electricity	15.6%
Propane / LP gas	1.5%
Fuel oil	14.1%
No fuel used	1.9%

Households & families

Household type	Count	%
Married-couple family	757	39.5%
Cohabiting couple	226	11.8%
Male householder, no spouse	280	14.6%
Female householder, no spouse	652	34.0%
Households with children under 18	428	22.3%
Households with seniors (65+)	699	36.5%
Average household size	2.31

Marital status

Status	Male	Female
Never married	33.5%	35.7%
Married	48.0%	37.9%
Separated	3.3%	0.0%
Widowed	2.0%	12.6%
Divorced	13.2%	13.8%

Education

Less than 9th grade 2.7%

Some HS, no diploma 1.8%

HS graduate 24.3%

Some college, no degree 19.4%

Associate's degree 9.5%

Bachelor's degree 29.2%

Graduate / professional 13.1%

Metric	%
HS diploma or higher	95.5%
Bachelor's or higher	42.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	190	17.7%
Kindergarten	44	4.1%
Elementary school	312	29.0%
High school	170	15.8%
College / grad school	359	33.4%

Employment

Industry of employment

Education & healthcare 23.4%

Professional & management 17.0%

Retail trade 15.6%

Finance & real estate 9.1%

Manufacturing 8.5%

Construction 8.0%

Arts, food & hospitality 5.0%

Public administration 4.9%

Transportation & utilities 2.9%

Other services 2.7%

Wholesale trade 1.5%

Information 1.4%

Occupation

Category	%
Management, business & arts	47.3%
Service	7.6%
Sales & office	35.4%
Natural resources & construction	2.2%
Production & transportation	7.5%

Employment type

Type	%
Private sector	80.6%
Government	17.1%
Self-employed	2.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.6%
Carpool	2.9%
Public transit	0.7%
Walk	0.0%
Other means	0.9%
Avg commute (minutes)	37.1

Poverty

All people 4.8%

Under 18 years 7.4%

18 and over 4.2%

Married-couple families 2.4%

Female-led households 5.6%

Income support

Source	% of households
Social Security	39.6%
Retirement income	29.2%
Supplemental Security	3.4%
Cash public assistance	1.5%
Food stamps / SNAP	4.5%

Health indicators

Condition	%
High blood pressure	0.0%
High cholesterol	0.0%
Heart disease	7.8%
Stroke	3.5%
Asthma	8.9%
Arthritis	26.1%
Kidney disease	3.3%
Pulmonary disease	7.4%
Cancer	8.6%

Behavior / access	%
Binge drinking	14.7%
No physical activity	19.5%
Less than 7 hrs sleep	30.7%
Fair or poor health	12.8%
Poor mental health	13.5%
Poor physical health	9.8%
No health insurance	11.4%
Visited doctor (checkup)	76.3%
Visited dentist	69.0%
Cholesterol screening	0.0%
Teeth loss	11.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	162	4.4%

Disability	%
Any disability	12.6%
Under 18	6.4%
18–64 years	7.5%
65 and over	31.8%

Health insurance coverage

Type	%
Private insurance	74.1%
Public insurance	38.2%
Uninsured under 19	2.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,168	94.1%
Spanish	130	3.1%
Other Indo-European	102	2.4%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,983	89.9%
Born in same state	3,934	88.8%
Born in different state	2,940	66.4%
Foreign born	49	1.1%
Naturalized citizen	446	10.1%
Not a US citizen	352	78.9%

Ancestry

Ancestry	Count	%
Italian	744	16.8%
French	376	8.5%
English	105	2.4%

Ancestry	Count	%
Irish	77	1.7%
Arab	61	1.4%
Polish	16	0.4%

Technology access

Metric	% of households
Computer access	43.2%
Internet access	95.2%

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

Frequently asked questions

What ZIP codes does Mount Arlington, NJ have?

Mount Arlington, NJ has one ZIP code: 07856. Each ZIP code serves a distinct delivery area within the city and surrounding region.