Residential delivery area · New Jersey
ZIP Code 07856: Mount Arlington, NJ
ZIP code 07856 is in Mount Arlington, New Jersey, entirely in Morris County (Census 2020 ZIP-county file). About 4,800 people live there (Census Bureau, ACS 2020-2024). Median household income is $92,466 (Census Bureau, ACS 2020-2024). By Census place, 55% of its land lies in Mount Arlington; 45% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mount Arlington · its only residential ZIP
- County
- Morris County
- Census places
- Mount Arlington
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House district
- NJ-7 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 3.4 sq mi · 1,391 people per sq mi
Where is ZIP code 07856?
07856 centers on 40.916°, -74.627° and covers 3.4 square miles of land plus 0.7 of water. It borders 6 ZIP codes: 07885, 07850, 07847, 07843, 07852, 07849.
The map draws ZIP code areas only. For the streets inside 07856, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 07856 compare with the rest of Morris County?
| Measure | 07856 | In Morris County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 4,774 | 35th of 57 | 434th of 598 |
| Median household income | $93k | 41st of 43 | 359th of 476 |
| Median home value | $419k | 41st of 49 | 321st of 515 |
Its median household income is higher than in 75% of U.S. residential ZIP codes, and it is denser than 81% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 07856?
The 2020 Census counted 4,791 people in 07856; the ACS, which samples households over 2020-2024, estimates 4,774. Between the 2010 and 2020 censuses its population grew 21.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,774
- 2020 Census count
- 4,791+21.5% since 2010 (3,944)
- Households
- 2,305
- Median age
- 50.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 07856?
Of the 4,774 people the ACS estimates in 07856, 13.5% are under 18 and 27.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (75.2%), then Hispanic or Latino (11.7%).
- Under 1813.5%
- 18 to 6458.7%
- 65 and older27.8%
- White, not Hispanic75.2%
- Hispanic or Latino11.7%
- Black, not Hispanic6.9%
- Asian, not Hispanic3.8%
- Other or two or more2.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 07856 earn?
Median household income is $92,466 (ACS 2020-2024), the 41st highest of the 43 ranked ZIP codes in Morris County. It is not measurably different from 2015-2019 ($111,043 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $92,466±$19,040
- Income per person
- $55,578
- Below the poverty line
- 4.1%
- Unemployed (of the labor force)
- 4.0%
- Adults 25+ with a bachelor's degree
- 48.0%
- Adjusted gross income per tax return, 2022
- $106,1912,710 returns; wages 68% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 07856?
FHFA's house price index for 07856, built from repeat sales and appraisals of the same homes, rose 65% from 2015 to 2025 and rose 51% from 2020 to 2025, and moved +13.0% in 2025.
- Median home value (owners' estimate)
- $419,200
- Median gross rent
- $2,447
- Homes owned by their occupants
- 72.5%
- Housing units
- 2,560
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 07856?
113 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services20
- Health care and social assistance20
- Administrative and support and waste management and remediation services12
- Other services (except public administration)11
- Retail trade10
- Accommodation and food services10
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 07856?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 07885 | Wharton | 11,806 | $101k | 1.5 mi |
| 07850 | Landing | 6,828 | $107k | 1.8 mi |
| 07847 | Kenvil | 1,776 | $85k | 2.0 mi |
| 07843 | Hopatcong | 11,098 | $109k | 2.3 mi |
| 07852 | Ledgewood | 4,233 | $120k | 3.1 mi |
| 07849 | Lake Hopatcong | 8,380 | $117k | 3.4 mi |
| 07803 | Mine Hill | 4,048 | $120k | 3.0 mi (near) |
| 07801 | Dover | 27,128 | $85k | 3.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.