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/08511

08511

ZIP 08511 is Cookstown, New Jersey, in Burlington County; area codes 609 and 640; Eastern time.

Type
Standard
Time zone
America/New_York
County
Burlington
Population
976
Coordinates
40.0437, -74.5477
☼ Live from 08511 — Cookstown, NJ

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 08511 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 08511
  • 🔢 Type 08511 into a pocket calculator and turn it upside down: IISBO — not quite a word, sorry.
  • ➕ As a number, 8,511 = 3 × 2837. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10000100111111
  • 🏠 Its numerical neighbours: 08510 (Millstone Township, NJ, 12 mi away) and 08512 (Cranbury, NJ, 19 mi away).
  • 🔄 Backwards, 08511 becomes 11580 — and that is a real ZIP code: Valley Stream, NY, 62 miles away.
  • 👥 25 other ZIP codes are made of exactly the same digits (01518, 01581, 01815, 01851, 10158, 10185, …). The farthest-flung twin is 85011 in Phoenix, AZ, 2,111 miles away.
  • 🧭 Farther north than 57% of all ZIP codes, and farther east than 89%.
  • 🎯1,269 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 08511 and you would come out at 40.04°S, 105.45°E — 806 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 01m of daylight. Shortest: 9h 19m.
  • 📏 At 2.4 square miles of land, 08511 is bigger than 13% of ZIP codes — room for about 1.8 Central Parks.
🌙 The sky over 08511 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population976This ZIP976
Households388This ZIP388
Housing units394This ZIP394
Median age32.5This ZIP32.5New Jersey40.1US 38.9
Median household income$80,952This ZIP$80,952New Jersey$103,556US $80,734
Median home value$360,200This ZIP$360,200New Jersey$454,400US $332,700
Median gross rent$1,150This ZIP$1,150New Jersey$1,720US $1,413
Bachelor's degree or higher34.7%This ZIP34.7%
Mean commute32.8 minThis ZIP32.8 min
Population density409.1 / sq miThis ZIP409.1 / sq mi

Business and tax activity

Business establishments35This ZIP35
Employees273This ZIP273
Annual payroll$15,354,000This ZIP$15,354,000
Tax returns filed490This ZIP490
Total adjusted gross income$40,746,000This ZIP$40,746,000

Land area

Land area2.39 sq miThis ZIP2.39 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 08511

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

ZIP codes near 08511

ZIPCityDistance
08641 Joint Base Mdl, NJ 2.4 mi
08640 Joint Base Mdl, NJ 2.5 mi
08562 Wrightstown, NJ 2.7 mi
08533 New Egypt, NJ 3.8 mi
08042 Juliustown, NJ 6.4 mi
08514 Cream Ridge, NJ 6.9 mi
08041 Jobstown, NJ 7.2 mi
08015 Browns Mills, NJ 7.8 mi
08515 Chesterfield, NJ 8.0 mi
08064 New Lisbon, NJ 8.2 mi

Find every ZIP code within 10 miles of 08511 →

Questions about this ZIP code

Where is ZIP code 08511?

08511 is in Cookstown, New Jersey, in Burlington County, part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Its published point location is 40.0437, -74.5477.

What county is 08511 in?

08511 lies in Burlington County.

What area code is 08511?

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

What time zone is 08511 in?

08511 uses America/New_York.

How many people live in 08511?

About 976 people live in ZIP code 08511, in 388 households, at 409.1 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 08511?

$80,952 a year, against $103,556 across New Jersey.

What ZIP codes are near 08511?

The closest are 08641 (2.4 mi), 08640 (2.5 mi), 08562 (2.7 mi), 08533 (3.8 mi) and 08042 (6.4 mi).

Is 08511 a PO Box ZIP code?

08511 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “08511 ZIP Code — Cookstown, New Jersey (Burlington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/08511

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/08511.json

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