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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/07845

07845

ZIP 07845 is Ironia, New Jersey, in Morris County; Eastern time.

Type
No street area
Time zone
America/New_York
County
Morris
Coordinates
40.8229, -74.6257

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 07869, whose figures describe that area — not this ZIP code.

☼ Live from 07845 — Ironia, NJ

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Where 07845 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 07845
  • 🔢 Type 07845 into a pocket calculator and turn it upside down: ShBLO — not quite a word, sorry.
  • ➕ As a number, 7,845 = 3 × 5 × 523. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111010100101
  • 🏠 Its numerical neighbours: 07844 (Hope, NJ, 19 mi away) and 07846 (Johnsonburg, NJ, 16 mi away).
  • 🔄 Backwards, 07845 becomes 54870 — and that is a real ZIP code: Sarona, WI, 924 miles away.
  • 👥 57 other ZIP codes are made of exactly the same digits (04578, 04758, 04785, 05478, 05487, 05748, …). The farthest-flung twin is 85074 in Phoenix, AZ, 2,108 miles away.
  • 🧭 Farther north than 65% of all ZIP codes, and farther east than 88%.
  • 🎯1,260 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 07845 and you would come out at 40.82°S, 105.37°E — 845 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 06m of daylight. Shortest: 9h 14m.
🌙 The sky over 07845 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments6This ZIP6
Employees19This ZIP19
Annual payroll$894,000This ZIP$894,000

Land area

ZIP codes near 07845

ZIPCityDistance
07876 Succasunna, NJ 2.7 mi
07869 Randolph, NJ 2.8 mi
07970 Mount Freedom, NJ 3.0 mi
07945 Mendham, NJ 3.2 mi
07926 Brookside, NJ 3.3 mi
07802 Dover, NJ 3.9 mi
07806 Picatinny Arsenal, NJ 3.9 mi
07962 Morristown, NJ 3.9 mi
07999 Whippany, NJ 3.9 mi
07803 Mine Hill, NJ 4.0 mi

Find every ZIP code within 10 miles of 07845 →

Questions about this ZIP code

Where is ZIP code 07845?

07845 is in Ironia, New Jersey, in Morris County, part of the New York-Newark-Jersey City, NY-NJ metropolitan area. Its published point location is 40.8229, -74.6257.

What county is 07845 in?

07845 lies in Morris County.

What time zone is 07845 in?

07845 uses America/New_York.

What ZIP codes are near 07845?

The closest are 07876 (2.7 mi), 07869 (2.8 mi), 07970 (3 mi), 07945 (3.2 mi) and 07926 (3.3 mi).

Is 07845 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “07845 ZIP Code — Ironia, New Jersey (Morris County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/07845

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/07845.json

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