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 — ZIP/08501

08501

ZIP 08501 is Allentown, New Jersey, mostly in Monmouth County; area codes 609 and 640; Eastern time.

Type
Standard
Time zone
America/New_York
County
Monmouth +2 more
Population
6,364
Coordinates
40.1663, -74.5525
☼ Live from 08501 — Allentown, NJ

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Where 08501 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 08501
  • 🔢 Type 08501 into a pocket calculator and turn it upside down: IOSBO — not quite a word, sorry.
  • ➕ 08501 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10000100110101
  • 🏠 Its numerical neighbours: 08406 (Ventnor City, NJ, 57 mi away) and 08502 (Belle Mead, NJ, 20 mi away).
  • 🔄 Backwards, 08501 becomes 10580 — and that is a real ZIP code: Rye, NY, 72 miles away.
  • 👥 25 other ZIP codes are made of exactly the same digits (00851, 01085, 01508, 01805, 01850, 05081, …). The farthest-flung twin is 85001 in Phoenix, AZ, 2,110 miles away.
  • 🧭 Farther north than 58% of all ZIP codes, and farther east than 89%.
  • 🎯1,268 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 08501 and you would come out at 40.17°S, 105.45°E — 812 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 02m of daylight. Shortest: 9h 18m.
  • 📏 At 27.2 square miles of land, 08501 is bigger than 44% of ZIP codes — room for about 21 Central Parks.
🌙 The sky over 08501 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population6,364This ZIP6,364
Households2,502This ZIP2,502
Housing units2,575This ZIP2,575
Median age52.5This ZIP52.5New Jersey40.1US 38.9
Median household income$146,182This ZIP$146,182New Jersey$103,556US $80,734
Median home value$588,800This ZIP$588,800New Jersey$454,400US $332,700
Median gross rent$1,497This ZIP$1,497New Jersey$1,720US $1,413
Bachelor's degree or higher57.7%This ZIP57.7%
Mean commute32.1 minThis ZIP32.1 min
Population density233.9 / sq miThis ZIP233.9 / sq mi

Business and tax activity

Business establishments168This ZIP168
Employees1,419This ZIP1,419
Annual payroll$80,758,000This ZIP$80,758,000
Tax returns filed3,380This ZIP3,380
Total adjusted gross income$503,007,000This ZIP$503,007,000

Land area

Land area27.21 sq miThis ZIP27.21 sq mi
Water area0.61 sq miThis ZIP0.61 sq mi

Counties 08501 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Monmouth County 86.8%
Burlington County 10.2%
Mercer County 3.0%

Other place names in 08501

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

ZIP codes near 08501

ZIPCityDistance
08691 Trenton, NJ 3.9 mi
08514 Cream Ridge, NJ 3.9 mi
08526 Imlaystown, NJ 4.1 mi
08620 Trenton, NJ 5.2 mi
08555 Roosevelt, NJ 5.8 mi
08561 Windsor, NJ 5.8 mi
08520 Hightstown, NJ 6.4 mi
08515 Chesterfield, NJ 6.7 mi
08510 Millstone Township, NJ 6.9 mi
08690 Trenton, NJ 7.0 mi

Find every ZIP code within 10 miles of 08501 →

Questions about this ZIP code

Where is ZIP code 08501?

08501 is in Allentown, New Jersey, in Monmouth County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.1663, -74.5525.

What county is 08501 in?

08501 spans 3 counties: Monmouth County, Burlington County and Mercer County. Most of it falls in Monmouth County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 08501?

Allentown uses area codes 609 and 640, from NANPA's telephone records.

What time zone is 08501 in?

08501 uses America/New_York.

How many people live in 08501?

About 6,364 people live in ZIP code 08501, in 2,502 households, at 233.9 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 08501?

$146,182 a year, against $103,556 across New Jersey.

What ZIP codes are near 08501?

The closest are 08691 (3.9 mi), 08514 (3.9 mi), 08526 (4.1 mi), 08620 (5.2 mi) and 08555 (5.8 mi).

Is 08501 a PO Box ZIP code?

08501 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “08501 ZIP Code — Allentown, New Jersey (Monmouth County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/08501

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