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/54640

54640

ZIP 54640 is Lynxville, Wisconsin, in Crawford County; area code 608; Central time.

Type
No street area
Time zone
America/Chicago
County
Crawford
Metro area
none
Coordinates
43.2464, -91.0562

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 54626, whose figures describe that area — not this ZIP code.

☼ Live from 54640 — Lynxville, WI

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Where 54640 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 54640
  • 🔢 Type 54640 into a pocket calculator and turn it upside down: OhghS — not quite a word, sorry.
  • ➕ As a number, 54,640 = 2 × 2 × 2 × 2 × 5 × 683. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101010101110000
  • 🏠 Its numerical neighbours: 54639 (La Farge, WI, 34 mi away) and 54641 (Mather, WI, 72 mi away).
  • 🔄 Backwards, 54640 becomes 04645 — and that is a real ZIP code: Isle Au Haut, ME, 1,119 miles away.
  • 👥 32 other ZIP codes are made of exactly the same digits (04456, 04564, 04645, 04654, 05446, 05464, …). The farthest-flung twin is 04654 in Machias, ME, 1,172 miles away.
  • 🧭 Farther north than 84% of all ZIP codes, and farther west than 59%.
  • 🎯455 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 54640 and you would come out at 43.25°S, 88.94°E — 985 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
🌙 The sky over 54640 today
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Source: USGS.

Land area

ZIP codes near 54640

ZIPCityDistance
54626 Eastman, WI 1.9 mi
54654 Seneca, WI 5.4 mi
54657 Steuben, WI 8.1 mi
54645 Mount Sterling, WI 8.2 mi
54628 Ferryville, WI 8.9 mi
52146 Harpers Ferry, IA 9.0 mi
53826 Wauzeka, WI 11.3 mi
54631 Gays Mills, WI 11.6 mi
52151 Lansing, IA 12.6 mi
52170 Waterville, IA 12.6 mi

Find every ZIP code within 10 miles of 54640 →

Questions about this ZIP code

Where is ZIP code 54640?

54640 is in Lynxville, Wisconsin, in Crawford County. Its published point location is 43.2464, -91.0562.

What county is 54640 in?

54640 lies in Crawford County.

What area code is 54640?

Lynxville uses area code 608, from NANPA's telephone records.

What time zone is 54640 in?

54640 uses America/Chicago.

What ZIP codes are near 54640?

The closest are 54626 (1.9 mi), 54654 (5.4 mi), 54657 (8.1 mi), 54645 (8.2 mi) and 54628 (8.9 mi).

Is 54640 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. “54640 ZIP Code — Lynxville, Wisconsin (Crawford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/54640

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/54640.json

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