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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 — ZIP/08831

08831

ZIP 08831 is Monroe Township, New Jersey, in Middlesex County; area codes 732 and 848; Eastern time.

Type
Standard
Time zone
America/New_York
County
Middlesex
Population
55,658
Coordinates
40.3343, -74.4325
☼ Live from 08831 — Monroe Township, NJ

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NEXRAD radar
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Local time: —

Where 08831 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 08831
  • 🔢 Type 08831 into a pocket calculator and turn it upside down: IEBBO — not quite a word, sorry.
  • ➕ 08831 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10001001111111
  • 🏠 Its numerical neighbours: 08830 (Iselin, NJ, 17 mi away) and 08832 (Keasbey, NJ, 14 mi away).
  • 🔄 Backwards, 08831 becomes 13880, which is not a ZIP code at all.
  • 👥 26 other ZIP codes are made of exactly the same digits (03818, 08318, 13088, 13808, 18038, 18083, …). The farthest-flung twin is 83801 in Athol, ID, 2,130 miles away.
  • 🧭 Farther north than 59% of all ZIP codes, and farther east than 89%.
  • 🎯1,273 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 08831 and you would come out at 40.33°S, 105.57°E — 815 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 17m.
  • 📏 At 51.3 square miles of land, 08831 is bigger than 60% of ZIP codes — room for about 39 Central Parks.
🌙 The sky over 08831 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population55,658This ZIP55,658
Households24,083This ZIP24,083
Housing units24,806This ZIP24,806
Median age54.8This ZIP54.8New Jersey40.1US 38.9
Median household income$109,042This ZIP$109,042New Jersey$103,556US $80,734
Median home value$516,800This ZIP$516,800New Jersey$454,400US $332,700
Median gross rent$2,014This ZIP$2,014New Jersey$1,720US $1,413
Bachelor's degree or higher51.8%This ZIP51.8%
Mean commute37.9 minThis ZIP37.9 min
Population density1,085.0 / sq miThis ZIP1,085.0 / sq mi

Business and tax activity

Business establishments1,134This ZIP1,134
Employees17,939This ZIP17,939
Annual payroll$1,324,043,000This ZIP$1,324,043,000
Tax returns filed30,230This ZIP30,230
Total adjusted gross income$4,016,719,000This ZIP$4,016,719,000

Land area

Land area51.30 sq miThis ZIP51.30 sq mi
Water area0.46 sq miThis ZIP0.46 sq mi

Other place names in 08831

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 08831

ZIPCityDistance
08828 Helmetta, NJ 3.1 mi
08810 Dayton, NJ 3.9 mi
08884 Spotswood, NJ 4.6 mi
08512 Cranbury, NJ 4.9 mi
07726 Englishtown, NJ 5.8 mi
07763 Tennent, NJ 6.4 mi
08816 East Brunswick, NJ 6.6 mi
08818 Edison, NJ 6.7 mi
08855 Piscataway, NJ 6.7 mi
08862 Perth Amboy, NJ 6.7 mi

Find every ZIP code within 10 miles of 08831 →

Questions about this ZIP code

Where is ZIP code 08831?

08831 is in Monroe Township, New Jersey, in Middlesex County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.3343, -74.4325.

What county is 08831 in?

08831 lies in Middlesex County.

What area code is 08831?

Monroe Township uses area codes 732 and 848, from NANPA's telephone records.

What time zone is 08831 in?

08831 uses America/New_York.

How many people live in 08831?

About 55,658 people live in ZIP code 08831, in 24,083 households, at 1,085.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 08831?

$109,042 a year, against $103,556 across New Jersey.

What ZIP codes are near 08831?

The closest are 08828 (3.1 mi), 08810 (3.9 mi), 08884 (4.6 mi), 08512 (4.9 mi) and 07726 (5.8 mi).

Is 08831 a PO Box ZIP code?

08831 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “08831 ZIP Code — Monroe Township, New Jersey (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/08831

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