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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/50661

50661

ZIP 50661 is North Washington, Iowa, in Chickasaw County; area code 641; Central time.

Type
No street area
Time zone
America/Chicago
County
Chickasaw
Metro area
none
Coordinates
43.1174, -92.4144

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 50659, whose figures describe that area — not this ZIP code.

☼ Live from 50661 — North Washington, IA

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Where 50661 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 50661
  • 🔢 Type 50661 into a pocket calculator and turn it upside down: IggOS — not quite a word, sorry.
  • ➕ As a number, 50,661 = 3 × 3 × 13 × 433. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100010111100101
  • 🏠 Its numerical neighbours: 50660 (New Hartford, IA, 39 mi away) and 50662 (Oelwein, IA, 38 mi away).
  • 🔄 Backwards, 50661 becomes 16605, which is not a ZIP code at all.
  • 👥 37 other ZIP codes are made of exactly the same digits (01566, 05661, 06156, 06516, 06615, 10566, …). The farthest-flung twin is 01566 in Sturbridge, MA, 1,034 miles away.
  • 🧭 Farther north than 83% of all ZIP codes, and farther west than 62%.
  • 🎯392 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 50661 and you would come out at 43.12°S, 87.59°E — 932 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 23m of daylight. Shortest: 8h 59m.
🌙 The sky over 50661 today
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Source: USGS.

Land area

ZIP codes near 50661

ZIPCityDistance
50659 New Hampton, IA 4.6 mi
50603 Alta Vista, IA 5.4 mi
50645 Ionia, IA 6.9 mi
50620 Colwell, IA 9.3 mi
50628 Elma, IA 10.8 mi
52154 Lawler, IA 12.6 mi
50616 Charles City, IA 12.6 mi
50658 Nashua, IA 13.1 mi
50630 Fredericksburg, IA 15.0 mi
50460 Orchard, IA 15.8 mi

Find every ZIP code within 10 miles of 50661 →

Questions about this ZIP code

Where is ZIP code 50661?

50661 is in North Washington, Iowa, in Chickasaw County. Its published point location is 43.1174, -92.4144.

What county is 50661 in?

50661 lies in Chickasaw County.

What area code is 50661?

North Washington uses area code 641, from NANPA's telephone records.

What time zone is 50661 in?

50661 uses America/Chicago.

What ZIP codes are near 50661?

The closest are 50659 (4.6 mi), 50603 (5.4 mi), 50645 (6.9 mi), 50620 (9.3 mi) and 50628 (10.8 mi).

Is 50661 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. “50661 ZIP Code — North Washington, Iowa (Chickasaw County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50661

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/50661.json

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