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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/55791

55791

ZIP 55791 is Twig, Minnesota, in St. Louis County; area code 218; Central time.

Type
No street area
Time zone
America/Chicago
County
St. Louis
Metro area
Duluth, MN-WI
Coordinates
46.8944, -92.3646

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 55779, whose figures describe that area — not this ZIP code.

☼ Live from 55791 — Twig, MN

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Where 55791 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 55791
  • 🔢 Type 55791 into a pocket calculator and turn it upside down: IGLSS — not quite a word, sorry.
  • ➕ As a number, 55,791 = 3 × 3 × 6199. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101100111101111
  • 🏠 Its numerical neighbours: 55790 (Tower, MN, 64 mi away) and 55792 (Virginia, MN, 49 mi away).
  • 🔄 Backwards, 55791 becomes 19755, which is not a ZIP code at all.
  • 👥 15 other ZIP codes are made of exactly the same digits (15759, 15957, 51579, 55719, 55917, 55971, …). The farthest-flung twin is 95157 in San Jose, CA, 1,644 miles away.
  • 🧭 Farther north than 95% of all ZIP codes, and farther west than 62%.
  • 🎯579 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 55791 and you would come out at 46.89°S, 87.64°E — 819 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 53m of daylight. Shortest: 8h 31m.
🌙 The sky over 55791 today
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Source: USGS.

Land area

ZIP codes near 55791

ZIPCityDistance
55779 Saginaw, MN 4.1 mi
55811 Duluth, MN 7.8 mi
55814 Duluth, MN 8.9 mi
55810 Duluth, MN 10.5 mi
55717 Canyon, MN 12.1 mi
55733 Esko, MN 12.5 mi
55720 Cloquet, MN 12.7 mi
55702 Alborn, MN 13.6 mi
55806 Duluth, MN 14.2 mi
55807 Duluth, MN 14.4 mi

Find every ZIP code within 10 miles of 55791 →

Questions about this ZIP code

Where is ZIP code 55791?

55791 is in Twig, Minnesota, in St. Louis County, part of the Duluth, MN-WI metropolitan area. Its published point location is 46.8944, -92.3646.

What county is 55791 in?

55791 lies in St. Louis County.

What area code is 55791?

Twig uses area code 218, from NANPA's telephone records.

What time zone is 55791 in?

55791 uses America/Chicago.

What ZIP codes are near 55791?

The closest are 55779 (4.1 mi), 55811 (7.8 mi), 55814 (8.9 mi), 55810 (10.5 mi) and 55717 (12.1 mi).

Is 55791 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. “55791 ZIP Code — Twig, Minnesota (St. Louis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/55791

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curl https://zipcodes.pro/zip/55791.json

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