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/MOUNTAIN-LAKE

Mountain Lake ZIP codes, New Jersey

No ZIP code is named for Mountain Lake, NJ; addresses there use a neighbouring town's name. The ZIP code covering it is 07823. Its area code is 908.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
574
Area code
908

NANPA lists no telephone rate centre for Mountain Lake itself, so these are the area codes of the nearest one, Belvidere (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Mountain Lake in numbers

About 574 people live in Mountain Lake, in 244 households. The median household income is $108,056 a year, 4% above the New Jersey median of $103,556 (US: $80,734). The median owner-occupied home is valued at $340,000 (25% below the New Jersey median), and median gross rent is $1,808 a month. The median age is 55.4; 25.6% of adults 25 and over hold a bachelor's degree or higher (43.6% across New Jersey); the average commute takes 32 minutes.

Population574Mountain Lake574
Households244Mountain Lake244
Median age55.4Mountain Lake55.4New Jersey40.1US 38.9
Median household income$108,056Mountain Lake$108,056New Jersey$103,556US $80,734
Median home value$340,000Mountain Lake$340,000New Jersey$454,400US $332,700
Median gross rent$1,808Mountain Lake$1,808New Jersey$1,720US $1,413
Bachelor's degree or higher25.6%Mountain Lake25.6%New Jersey43.6%US 35.7%
Mean commute31.8 minMountain Lake31.8 minNew Jersey30.5 minUS 26.4 min
Population density510 / sq miMountain Lake510 / sq mi

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

ZIP codes covering Mountain Lake

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

ZIP codes overlapping Mountain Lake
ZIP City Type Population Median income Median home
07823 Belvidere , NJ Standard 7,451 $85,522 $322,000

Map of Mountain Lake ZIP codes

07823

The ZIP codes of Mountain Lake, 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 Mountain Lake

The nearest larger towns are Oxford (1,122 people, 3.8 mi), Great Meadows (604 people, 4.9 mi) and Belvidere (2,538 people, 4.9 mi).

Towns near Mountain Lake
TownPopulationDistance
Belvidere 2,538 4.9 mi
Washington 7,334 7.0 mi
Beattystown 4,917 7.4 mi
Panther Valley 4,553 8.4 mi
Hackettstown 10,140 8.5 mi
Bangor, PA 5,163 11.6 mi
Budd Lake 10,650 13.1 mi
Stroudsburg, PA 5,894 13.8 mi
East Stroudsburg, PA 9,319 13.9 mi
Pen Argyl, PA 3,495 13.9 mi
High Bridge 3,580 14.1 mi
Greenwich 2,679 14.3 mi
Flanders 8,809 14.5 mi
Chestnut Hill, PA 7,086 14.9 mi

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

Cite this page

zipcodes.pro. “Mountain Lake, NJ ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nj/mountain-lake

Underlying data is public domain or openly licensed — sources, vintages and licences.