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/MIDDLESEX

Middlesex ZIP code, New Jersey

The ZIP code for Middlesex, NJ is 08846.

USPS city name
1 ZIP code
Population
14,645

Middlesex in numbers

About 14,645 people live in Middlesex, in 5,718 households. The median household income is $105,000 a year, about the same as the New Jersey median of $103,556 (US: $80,734). The median owner-occupied home is valued at $446,400 (about the same as the New Jersey median), and median gross rent is $1,416 a month. The median age is 44.3; 36.9% of adults 25 and over hold a bachelor's degree or higher (43.6% across New Jersey); the average commute takes 26 minutes.

Population14,645Middlesex14,645
Households5,718Middlesex5,718
Median age44.3Middlesex44.3New Jersey40.1US 38.9
Median household income$105,000Middlesex$105,000New Jersey$103,556US $80,734
Median home value$446,400Middlesex$446,400New Jersey$454,400US $332,700
Median gross rent$1,416Middlesex$1,416New Jersey$1,720US $1,413
Bachelor's degree or higher36.9%Middlesex36.9%New Jersey43.6%US 35.7%
Mean commute26.1 minMiddlesex26.1 minNew Jersey30.5 minUS 26.4 min
Population density4,199 / sq miMiddlesex4,199 / sq mi

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

ZIP codes addressed as Middlesex

ZIP codes with the USPS city name Middlesex
ZIP City Type Population Median income Median home
08846 Middlesex , NJ Standard 14,645 $105,000 $446,400

Map of Middlesex ZIP codes

08846

The ZIP codes of Middlesex, 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 Middlesex

The nearest larger towns are South Plainfield (24,473 people, 4.4 mi), North Plainfield (22,809 people, 4.5 mi) and Somerset (22,720 people, 4.6 mi).

Towns near Middlesex
TownPopulationDistance
Dunellen 7,911 2.0 mi
South Bound Brook 4,867 2.1 mi
Bound Brook 12,219 2.1 mi
Franklin Center 6,646 3.7 mi
Finderne 6,489 4.1 mi
Rutgers University-Busch Campus 5,920 4.1 mi
South Plainfield 24,473 4.4 mi
North Plainfield 22,809 4.5 mi
Martinsville 11,559 4.5 mi
Somerset 22,720 4.6 mi
Rutgers University-Livingston Campus 3,258 4.8 mi
Plainfield 55,236 5.2 mi
Manville 10,921 5.3 mi
Watchung 6,485 5.7 mi

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

Cite this page

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

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