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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/08553

08553

ZIP 08553 is Rocky Hill, New Jersey, in Somerset County; Eastern time.

Type
Standard
Time zone
America/New_York
County
Somerset
Population
819
Coordinates
40.4003, -74.6389
☼ Live from 08553 — Rocky Hill, NJ

Weather right now

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NEXRAD radar
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Local time: —

Where 08553 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 08553
  • 🔢 Type 08553 into a pocket calculator and turn it upside down: ESSBO — not quite a word, sorry.
  • ➕ As a number, 8,553 = 3 × 2851. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10000101101001
  • 🏠 Its numerical neighbours: 08551 (Ringoes, NJ, 11 mi away) and 08554 (Roebling, NJ, 21 mi away).
  • 🔄 Backwards, 08553 becomes 35580 — and that is a real ZIP code: Parrish, AL, 835 miles away.
  • 👥 38 other ZIP codes are made of exactly the same digits (03585, 03855, 05358, 05853, 08535, 30558, …). The farthest-flung twin is 85350 in Somerton, AZ, 2,270 miles away.
  • 🧭 Farther north than 60% of all ZIP codes, and farther east than 88%.
  • 🎯1,262 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 08553 and you would come out at 40.40°S, 105.36°E — 826 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 04m of daylight. Shortest: 9h 17m.
  • 📏 At 0.610 square miles of land, 08553 is bigger than 6% of ZIP codes — about 295 football fields.
🌙 The sky over 08553 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population819This ZIP819
Households318This ZIP318
Housing units320This ZIP320
Median age44.5This ZIP44.5New Jersey40.1US 38.9
Median household income$148,056This ZIP$148,056New Jersey$103,556US $80,734
Median home value$597,200This ZIP$597,200New Jersey$454,400US $332,700
Median gross rent$1,799This ZIP$1,799New Jersey$1,720US $1,413
Bachelor's degree or higher71.1%This ZIP71.1%
Mean commute22.6 minThis ZIP22.6 min
Population density1,342.6 / sq miThis ZIP1,342.6 / sq mi

Business and tax activity

Business establishments28This ZIP28
Employees233This ZIP233
Annual payroll$8,745,000This ZIP$8,745,000
Tax returns filed390This ZIP390
Total adjusted gross income$59,810,000This ZIP$59,810,000

Land area

Land area0.61 sq miThis ZIP0.61 sq mi
Water area0.00 sq miThis ZIP0.00 sq mi

Other place names in 08553

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

ZIP codes near 08553

ZIPCityDistance
08528 Kingston, NJ 1.4 mi
08540 Princeton, NJ 2.6 mi
08542 Princeton, NJ 3.4 mi
08502 Belle Mead, NJ 3.4 mi
08504 Blawenburg, NJ 3.4 mi
08558 Skillman, NJ 3.5 mi
08541 Princeton, NJ 3.7 mi
08544 Princeton, NJ 3.9 mi
08823 Franklin Park, NJ 4.7 mi
08824 Kendall Park, NJ 4.7 mi

Find every ZIP code within 10 miles of 08553 →

Questions about this ZIP code

Where is ZIP code 08553?

08553 is in Rocky Hill, New Jersey, in Somerset County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.4003, -74.6389.

What county is 08553 in?

08553 lies in Somerset County.

What time zone is 08553 in?

08553 uses America/New_York.

How many people live in 08553?

About 819 people live in ZIP code 08553, in 318 households, at 1,342.6 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 08553?

$148,056 a year, against $103,556 across New Jersey.

What ZIP codes are near 08553?

The closest are 08528 (1.4 mi), 08540 (2.6 mi), 08542 (3.4 mi), 08502 (3.4 mi) and 08504 (3.4 mi).

Is 08553 a PO Box ZIP code?

08553 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “08553 ZIP Code — Rocky Hill, New Jersey (Somerset County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/08553

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