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/08520

08520

ZIP 08520 is Hightstown, New Jersey, in Mercer County; area codes 609 and 640; Eastern time.

Type
Standard
Time zone
America/New_York
County
Mercer
Population
29,504
Coordinates
40.2581, -74.5393
☼ Live from 08520 — Hightstown, NJ

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 08520 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 08520
  • 🔢 Type 08520 into a pocket calculator and turn it upside down: OZSBO — not quite a word, sorry.
  • ➕ As a number, 8,520 = 2 × 2 × 2 × 3 × 5 × 71. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10000101001000
  • 🏠 Its numerical neighbours: 08518 (Florence, NJ, 17 mi away) and 08525 (Hopewell, NJ, 16 mi away).
  • 🔄 Backwards, 08520 becomes 02580, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (05820, 08025, 08052, 08205, 08250, 08502, …). The farthest-flung twin is 85002 in Phoenix, AZ, 2,111 miles away.
  • 🧭 Farther north than 59% 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 08520 and you would come out at 40.26°S, 105.46°E — 815 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
  • 📏 At 18.0 square miles of land, 08520 is bigger than 36% of ZIP codes — room for about 14 Central Parks.
🌙 The sky over 08520 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population29,504This ZIP29,504
Households10,974This ZIP10,974
Housing units11,498This ZIP11,498
Median age40.9This ZIP40.9New Jersey40.1US 38.9
Median household income$118,010This ZIP$118,010New Jersey$103,556US $80,734
Median home value$376,600This ZIP$376,600New Jersey$454,400US $332,700
Median gross rent$1,657This ZIP$1,657New Jersey$1,720US $1,413
Bachelor's degree or higher46.3%This ZIP46.3%
Mean commute26.5 minThis ZIP26.5 min
Population density1,635.7 / sq miThis ZIP1,635.7 / sq mi

Business and tax activity

Business establishments669This ZIP669
Employees9,960This ZIP9,960
Annual payroll$565,479,000This ZIP$565,479,000
Tax returns filed15,280This ZIP15,280
Total adjusted gross income$1,410,251,000This ZIP$1,410,251,000

Land area

Land area18.04 sq miThis ZIP18.04 sq mi
Water area0.12 sq miThis ZIP0.12 sq mi

Other place names in 08520

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

ZIP codes near 08520

ZIPCityDistance
08561 Windsor, NJ 2.3 mi
08555 Roosevelt, NJ 4.5 mi
08550 Princeton Junction, NJ 4.6 mi
08512 Cranbury, NJ 4.6 mi
08691 Trenton, NJ 4.7 mi
08536 Plainsboro, NJ 5.7 mi
08535 Millstone Township, NJ 5.9 mi
08501 Allentown, NJ 6.4 mi
08690 Trenton, NJ 6.7 mi
08526 Imlaystown, NJ 7.4 mi

Find every ZIP code within 10 miles of 08520 →

Questions about this ZIP code

Where is ZIP code 08520?

08520 is in Hightstown, New Jersey, in Mercer County, part of the Trenton-Princeton, NJ metropolitan area. Its published point location is 40.2581, -74.5393.

What county is 08520 in?

08520 lies in Mercer County.

What area code is 08520?

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

What time zone is 08520 in?

08520 uses America/New_York.

How many people live in 08520?

About 29,504 people live in ZIP code 08520, in 10,974 households, at 1,635.7 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 08520?

$118,010 a year, against $103,556 across New Jersey.

What ZIP codes are near 08520?

The closest are 08561 (2.3 mi), 08555 (4.5 mi), 08550 (4.6 mi), 08512 (4.6 mi) and 08691 (4.7 mi).

Is 08520 a PO Box ZIP code?

08520 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “08520 ZIP Code — Hightstown, New Jersey (Mercer County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/08520

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/08520.json

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