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/03073

03073

ZIP 03073 is North Salem, New Hampshire, in Rockingham County; area code 603; Eastern time.

Type
No street area
Time zone
America/New_York
County
Rockingham
Coordinates
42.8370, -71.2206

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 03079, whose figures describe that area — not this ZIP code.

☼ Live from 03073 — North Salem, NH

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Where 03073 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 03073
  • 🔢 Type 03073 into a pocket calculator and turn it upside down: ELOEO — not quite a word, sorry.
  • ➕ As a number, 3,073 = 7 × 439. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 110000000001
  • 🏠 Its numerical neighbours: 03071 (New Ipswich, NH, 34 mi away) and 03076 (Pelham, NH, 9 mi away).
  • 🔄 Backwards, 03073 becomes 37030 — and that is a real ZIP code: Carthage, TN, 904 miles away.
  • 👥 15 other ZIP codes are made of exactly the same digits (00733, 03037, 03307, 07033, 07303, 30037, …). The farthest-flung twin is 00733 in Ponce, PR, 1,736 miles away.
  • 🧭 Farther north than 81% of all ZIP codes, and farther east than 96%.
  • 🎯1,428 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03073 and you would come out at 42.84°S, 108.78°E — 846 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 21m of daylight. Shortest: 9h 01m.
🌙 The sky over 03073 today
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Source: USGS.

Business and tax activity

Business establishments7This ZIP7
Employees56This ZIP56
Annual payroll$2,428,000This ZIP$2,428,000

Land area

ZIP codes near 03073

ZIPCityDistance
03811 Atkinson, NH 2.7 mi
03079 Salem, NH 3.4 mi
03841 Hampstead, NH 3.6 mi
03087 Windham, NH 4.5 mi
03038 Derry, NH 4.8 mi
03041 East Derry, NH 5.3 mi
01832 Haverhill, MA 5.5 mi
03826 East Hampstead, NH 5.8 mi
03865 Plaistow, NH 6.5 mi
01831 Haverhill, MA 6.8 mi

Find every ZIP code within 10 miles of 03073 →

Questions about this ZIP code

Where is ZIP code 03073?

03073 is in North Salem, New Hampshire, in Rockingham County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.8370, -71.2206.

What county is 03073 in?

03073 lies in Rockingham County.

What area code is 03073?

North Salem uses area code 603, from NANPA's telephone records.

What time zone is 03073 in?

03073 uses America/New_York.

What ZIP codes are near 03073?

The closest are 03811 (2.7 mi), 03079 (3.4 mi), 03841 (3.6 mi), 03087 (4.5 mi) and 03038 (4.8 mi).

Is 03073 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. “03073 ZIP Code — North Salem, New Hampshire (Rockingham County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03073

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curl https://zipcodes.pro/zip/03073.json

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