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Zip Code 07856 — Mount Arlington, NJ

07856 is a ZIP Code associated with Mount Arlington, NJ, located within Morris. The postal region supports an estimated population of 4,774 residents across Data Pending housing units, with a population density of 536.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.918900, -74.633600)

Data MetricLocal Statistic
Postal / Zip Code07856
Primary CityMount Arlington
State / ProvinceNJ
CountyMorris
Total Population4,774
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density536.9 people/sq mi
TimezoneAmerica/New_York

How 07856 Compares

MetricZIP 07856Morris CountyNJ State Average
Population4,774504,0489,343,809
Median IncomeData PendingN/AN/A
Population Density536.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 07850Landing1.7 mi6,828N/A
Zip 07843Hopatcong2.0 mi11,098N/A
Zip 07847Kenvil2.4 mi1,776N/A
Zip 07852Ledgewood2.9 mi4,233N/A
Zip 07885Wharton3.1 mi11,806N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →