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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/83531

83531

ZIP 83531 is Fenn, Idaho, in Idaho County; area code 208; Pacific time.

Type
No street area
Time zone
America/Los_Angeles
County
Idaho
Metro area
none
Coordinates
45.9632, -116.2563

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 83530, whose figures describe that area — not this ZIP code.

☼ Live from 83531 — Fenn, ID

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Where 83531 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 83531
  • 🔢 Type 83531 into a pocket calculator and turn it upside down: IESEB — not quite a word, sorry.
  • ➕ As a number, 83,531 = 7 × 11933. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100011001001011
  • 🏠 Its numerical neighbours: 83530 (Grangeville, ID, 12 mi away) and 83533 (Greencreek, ID, 11 mi away).
  • 🔄 Backwards, 83531 becomes 13538, which is not a ZIP code at all.
  • 👥 21 other ZIP codes are made of exactly the same digits (13835, 15338, 18335, 18353, 33158, 33185, …). The farthest-flung twin is 33158 in Miami, FL, 2,423 miles away.
  • 🧭 Farther north than 94% of all ZIP codes, and farther west than 89%.
  • 🎯987 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 83531 and you would come out at 45.96°S, 63.74°E — 381 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 45m of daylight. Shortest: 8h 38m.
🌙 The sky over 83531 today
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Source: USGS.

Land area

ZIP codes near 83531

ZIPCityDistance
83533 Greencreek, ID 10.6 mi
83522 Cottonwood, ID 11.0 mi
83530 Grangeville, ID 11.7 mi
83526 Ferdinand, ID 14.8 mi
83552 Stites, ID 16.1 mi
83554 White Bird, ID 19.0 mi
83536 Kamiah, ID 20.6 mi
83523 Craigmont, ID 20.9 mi
83543 Nezperce, ID 21.4 mi
83555 Winchester, ID 23.4 mi

Find every ZIP code within 10 miles of 83531 →

Questions about this ZIP code

Where is ZIP code 83531?

83531 is in Fenn, Idaho, in Idaho County. Its published point location is 45.9632, -116.2563.

What county is 83531 in?

83531 lies in Idaho County.

What area code is 83531?

Fenn uses area code 208, from NANPA's telephone records.

What time zone is 83531 in?

83531 uses America/Los_Angeles.

What ZIP codes are near 83531?

The closest are 83533 (10.6 mi), 83522 (11 mi), 83530 (11.7 mi), 83526 (14.8 mi) and 83552 (16.1 mi).

Is 83531 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. “83531 ZIP Code — Fenn, Idaho (Idaho County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/83531

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