Middlesex County, NJ ZIP codes
There are 45 ZIP codes in Middlesex County, NJ, in 34 towns, from 07001 to 08989. The largest are 08831 (Monroe Township), 08861 (Perth Amboy) and 08854 (Piscataway).
The county seat is New Brunswick.
- ZIP codes
- 45
- Towns
- 34
- County seat
- New Brunswick
- County FIPS
34023- State
- New Jersey
- Population
- 871,290
- Median household income
- $111,549
- Land area
- 309 sq mi
- Metro area
- New York-Newark-Jersey City
Middlesex County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Middlesex County ZIP codes
The ZIP codes of Middlesex County, 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.
Middlesex County in numbers
About 871,290 people live in Middlesex County, in 307,782 households, the 2nd most populous of New Jersey's 21 counties. The median household income is $111,549 a year, 8% above the New Jersey median of $103,556 (US: $80,734). The median owner-occupied home is valued at $462,900 (about the same as the New Jersey median), and median gross rent is $1,871 a month. The median age is 39.5; 45.6% of adults 25 and over hold a bachelor's degree or higher (43.6% across New Jersey); the average commute takes 31 minutes.
| Population | 871,290 |
|---|---|
| Households | 307,782 |
| Median age | 39.5 |
| Median household income | $111,549 |
| Median home value | $462,900 |
| Median gross rent | $1,871 |
| Bachelor's degree or higher | 45.6% |
| Mean commute | 31.2 min |
| Population density | 2,817 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Middlesex County
| Town | ZIP codes | Population |
|---|---|---|
| Edison | 5 | 108,435 |
| Piscataway | 2 | 61,088 |
| New Brunswick | 5 | 56,345 |
| Perth Amboy | 2 | 55,855 |
| Monroe Township | 1 | 55,658 |
| East Brunswick | 1 | 49,360 |
| Sayreville | 2 | 45,838 |
| North Brunswick | 1 | 43,932 |
| Old Bridge | 1 | 28,236 |
| Carteret | 1 | 25,496 |
| Parlin | 1 | 25,448 |
| South Plainfield | 1 | 24,473 |
| Plainsboro | 1 | 20,817 |
| Woodbridge | 1 | 20,756 |
| Iselin | 1 | 19,551 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Middlesex County.
Not sure you are in Middlesex County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Middlesex County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
07001 | Avenel , NJ | Standard | 17,121 | $101,670 | $401,000 |
07008 | Carteret , NJ | Standard | 25,526 | $97,021 | $406,000 |
07064 | Port Reading , NJ | Standard | 3,481 | $133,854 | $435,400 |
07067 | Colonia , NJ | Standard | 18,587 | $122,713 | $493,100 |
07077 | Sewaren , NJ | Standard | 3,248 | $108,948 | $429,200 |
07080 | South Plainfield , NJ | Standard | 24,411 | $130,205 | $470,900 |
07095 | Woodbridge , NJ | Standard | 20,756 | $104,926 | $390,000 |
07747 | Matawan , NJ | Standard | 32,330 | $124,383 | $485,600 |
08512 | Cranbury , NJ | Standard | 12,928 | $118,587 | $659,400 |
08536 | Plainsboro , NJ | Standard | 20,817 | $137,607 | $704,100 |
08810 | Dayton , NJ | Standard | 7,952 | $151,902 | $496,600 |
08816 | East Brunswick , NJ | Standard | 49,360 | $143,586 | $522,700 |
08817 | Edison , NJ | Standard | 49,020 | $110,808 | $431,100 |
08818 | Edison , NJ | No street area | — | — | — |
08820 | Edison , NJ | Standard | 39,978 | $171,363 | $630,200 |
08824 | Kendall Park , NJ | Standard | 13,366 | $174,776 | $628,000 |
08828 | Helmetta , NJ | Standard | 2,459 | $98,952 | $355,000 |
08830 | Iselin , NJ | Standard | 19,551 | $109,500 | $426,800 |
08831 | Monroe Township , NJ | Standard | 55,658 | $109,042 | $516,800 |
08832 | Keasbey , NJ | Standard | 2,252 | — | $278,800 |
08837 | Edison , NJ | Standard | 19,437 | $102,605 | $437,900 |
08840 | Metuchen , NJ | Standard | 18,206 | $146,635 | $560,100 |
08846 | Middlesex , NJ | Standard | 14,645 | $105,000 | $446,400 |
08850 | Milltown , NJ | Standard | 8,538 | $141,601 | $470,700 |
08852 | Monmouth Junction , NJ | Standard | 18,062 | $133,209 | $523,000 |
08854 | Piscataway , NJ | Standard | 61,088 | $127,806 | $449,900 |
08855 | Piscataway , NJ | No street area | — | — | — |
08857 | Old Bridge , NJ | Standard | 40,891 | $109,312 | $486,600 |
08859 | Parlin , NJ | Standard | 25,448 | $99,882 | $445,800 |
08861 | Perth Amboy , NJ | Standard | 59,351 | $64,491 | $370,900 |
08862 | Perth Amboy , NJ | No street area | — | — | — |
08863 | Fords , NJ | Standard | 12,771 | $115,861 | $438,000 |
08871 | Sayreville , NJ | No street area | — | — | — |
08872 | Sayreville , NJ | Standard | 20,204 | $97,489 | $447,200 |
08879 | South Amboy , NJ | Standard | 23,556 | $92,786 | $389,800 |
08882 | South River , NJ | Standard | 16,124 | $96,147 | $405,200 |
08884 | Spotswood , NJ | Standard | 8,187 | $104,702 | $369,500 |
08899 | Edison , NJ | No street area | — | — | — |
08901 | New Brunswick , NJ | Standard | 57,263 | $65,810 | $353,800 |
08902 | North Brunswick , NJ | Standard | 43,932 | $121,071 | $433,800 |
08903 | New Brunswick , NJ | No street area | — | — | — |
08904 | Highland Park , NJ | Standard | 15,121 | $104,694 | $471,700 |
08906 | New Brunswick , NJ | No street area | — | — | — |
08933 | New Brunswick , NJ | No street area | — | — | — |
08989 | New Brunswick , NJ | No street area | — | — | — |
Cite this page
zipcodes.pro. “Middlesex County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/nj/county/middlesex
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