Mount Arlington is a borough in Morris County, New Jersey, home to about 5,935 people across 2.1 square miles. Its ZIP code is 07856, and parts of 07850 are in Mount Arlington too.
Homes sold for a median of $288 per square foot in the three months ending August 2026, a seller’s market.
Mostly Mount Arlington; also Roxbury
Mostly Roxbury; part is in Mount Arlington
Each card is that ZIP code’s whole market, including any part outside Mount Arlington. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Mount Arlington’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Mount Arlington well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Newark Liberty International Airport (EWR)29 miles away |
|---|---|
| Nearest city of 250,000+ | Newark, NJ28 miles away |
| Nearest city of 1 million+ | New York, NY41 miles away |
Straight-line distances from the center of Mount Arlington; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Mount Arlington had 5,909 residents in the 2020 census, up 27% since 2000.
It’s the 349th largest of 565 towns in New Jersey by population.
Morris County grew from 65,156 residents in 1900 to 509,285 in 2020.
Morris County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 19°F. About 48.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Andover Aeroflex Ap, NJ weather station (8 miles away).
301,249 jobs at 16,518 businesses in Morris County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
58 doctors and other health care providers list an office in Mount Arlington.
Nearest hospitals
Providers with an office here
| Specialist doctors | 10 |
|---|---|
| Dentists | 7 |
| Nurse practitioners and physician assistants | 12 |
| Mental health providers | 20 |
| Physical and occupational therapists | 7 |
| Optometrists | 1 |
| Chiropractors | 1 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (4 nearby)
Grocery stores
Pharmacies
Libraries (1 nearby)
Museums
Theaters and performance venues
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1890.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Mount Arlington Public School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Edith M. Decker Elementary SchoolMt Arlington | Pre-K–2 | 153 | Public | 0.8 mi |
| Mount Arlington Public SchoolMt Arlington | 3–8 | 223 | Public | 0.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Roxbury.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.