Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/NJ/MOUNTAINSIDE

Mountainside ZIP code, New Jersey

The ZIP code for Mountainside, NJ is 07092.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
7,049

Mail addressed to Mountainside uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Mountainside in numbers

About 7,049 people live in Mountainside, in 2,508 households. The median household income is $211,538 a year, 2.0 times the New Jersey median of $103,556 (US: $80,734). The median owner-occupied home is valued at $810,300 (78% above the New Jersey median), and median gross rent is $3,500+ a month. The median age is 48.0; 67.3% of adults 25 and over hold a bachelor's degree or higher (43.6% across New Jersey); the average commute takes 36 minutes.

Population7,049Mountainside7,049
Households2,508Mountainside2,508
Median age48.0Mountainside48.0New Jersey40.1US 38.9
Median household income$211,538Mountainside$211,538New Jersey$103,556US $80,734
Median home value$810,300Mountainside$810,300New Jersey$454,400US $332,700
Median gross rent$3,500+Mountainside$3,500+New Jersey$1,720US $1,413
Bachelor's degree or higher67.3%Mountainside67.3%New Jersey43.6%US 35.7%
Mean commute36.0 minMountainside36.0 minNew Jersey30.5 minUS 26.4 min
Population density1,764 / sq miMountainside1,764 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Mountainside borough. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Mountainside

ZIP codes with the USPS city name Mountainside
ZIP City Type Population Median income Median home
07092 Mountainside , NJ Standard 7,049 $211,538 $810,300

Other ZIP codes overlapping Mountainside

These ZIP codes cover part of Mountainside but are addressed as somewhere else.

ZIP codes overlapping Mountainside
ZIP City Type Population Median income Median home
07090 Westfield , NJ Standard 31,111 $232,629 $953,400

Map of Mountainside ZIP codes

07092

The ZIP codes of Mountainside, NJ, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Mountainside

The nearest larger towns are Westfield (31,111 people, 2.2 mi), Summit (22,705 people, 2.4 mi) and New Providence (13,727 people, 2.7 mi).

Towns near Mountainside
TownPopulationDistance
Westfield 31,111 2.2 mi
Summit 22,705 2.4 mi
New Providence 13,727 2.7 mi
Garwood 4,885 2.8 mi
Fanwood 7,799 3.0 mi
Kenilworth 8,401 3.8 mi
Chatham 9,407 4.3 mi
Short Hills 14,923 4.4 mi
Vauxhall 6,157 4.7 mi
Watchung 6,485 4.8 mi
Union 2,774 4.9 mi
Roselle Park 14,093 5.0 mi
Gillette 2,833 5.2 mi
Plainfield 55,236 5.4 mi

More nearby: every ZIP code in Union County · New Jersey ZIP codes

Cite this page

zipcodes.pro. “Mountainside, NJ ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nj/mountainside

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