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/01903

01903

ZIP 01903 is in Lynn, Massachusetts, in Essex County; area codes 781 and 339; Eastern time. Lynn has 6 ZIP codes; the others are 01901, 01902, 01904, 01905 and 01910.

Type
No street area
Time zone
America/New_York
County
Essex
Coordinates
42.4668, -70.9495

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 01902, whose figures describe that area — not this ZIP code.

☼ Live from 01903 — Lynn, MA

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Where 01903 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 01903
  • 🔢 Type 01903 into a pocket calculator and turn it upside down: EOGIO — not quite a word, sorry.
  • ➕ As a number, 1,903 = 11 × 173. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11101101111
  • 🏠 Its numerical neighbours: 01902 (Lynn, MA, 1 mi away) and 01904 (Lynn, MA, 2 mi away).
  • 🔄 Backwards, 01903 becomes 30910, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (00913, 00931, 01039, 01093, 01930, 03109, …). The farthest-flung twin is 09031 in APO AE, a military post office, 3,725 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther east than 96%.
  • 🎯1,443 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01903 and you would come out at 42.47°S, 109.05°E — 817 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
🌙 The sky over 01903 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments7This ZIP7
Employees31This ZIP31
Annual payroll$1,284,000This ZIP$1,284,000

Land area

ZIP codes near 01903

ZIPCityDistance
01901 Lynn, MA 0.5 mi
01902 Lynn, MA 0.5 mi
01905 Lynn, MA 1.2 mi
01910 Lynn, MA 1.5 mi
01904 Lynn, MA 2.0 mi
01907 Swampscott, MA 2.2 mi
01908 Nahant, MA 2.9 mi
01906 Saugus, MA 3.2 mi
02151 Revere, MA 4.3 mi
01960 Peabody, MA 4.8 mi

Find every ZIP code within 10 miles of 01903 →

Questions about this ZIP code

Where is ZIP code 01903?

01903 is in Lynn, Massachusetts, in Essex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.4668, -70.9495.

What county is 01903 in?

01903 lies in Essex County.

What area code is 01903?

Lynn uses area codes 781 and 339, from NANPA's telephone records.

What time zone is 01903 in?

01903 uses America/New_York.

What ZIP codes are near 01903?

The closest are 01901 (0.5 mi), 01902 (0.5 mi), 01905 (1.2 mi), 01910 (1.5 mi) and 01904 (2 mi).

Is 01903 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. “01903 ZIP Code — Lynn, Massachusetts (Essex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01903

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/01903.json

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