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/43661

43661

ZIP 43661 is in Toledo, Ohio, in Lucas County; area codes 419 and 567; Eastern time. Toledo has 32 ZIP codes in all.

Type
No street area
Time zone
America/New_York
County
Lucas
Metro area
Toledo, OH
Coordinates
41.6782, -83.4972

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 43611, whose figures describe that area — not this ZIP code.

☼ Live from 43661 — Toledo, OH

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Where 43661 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 43661
  • 🔢 Type 43661 into a pocket calculator and turn it upside down: IggEh — not quite a word, sorry.
  • ➕ 43661 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1010101010001101
  • 🏠 Its numerical neighbours: 43660 (Toledo, OH, 2 mi away) and 43666 (Toledo, OH, 0 mi away).
  • 🔄 Backwards, 43661 becomes 16634 — and that is a real ZIP code: Dudley, PA, 296 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (13646, 13664, 16346, 16364, 16436, 16634, …). The farthest-flung twin is 34661 in Nobleton, FL, 905 miles away.
  • 🧭 Farther north than 72% of all ZIP codes, and farther east than 61%.
  • 🎯799 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 43661 and you would come out at 41.68°S, 96.50°E — 1,260 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 12m of daylight. Shortest: 9h 09m.
🌙 The sky over 43661 today
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Source: USGS.

Land area

ZIP codes near 43661

ZIPCityDistance
43656 Toledo, OH 0.0 mi
43666 Toledo, OH 0.0 mi
43608 Toledo, OH 1.6 mi
43611 Toledo, OH 1.8 mi
43605 Toledo, OH 2.1 mi
43660 Toledo, OH 2.5 mi
43604 Toledo, OH 2.8 mi
43434 Harbor View, OH 2.9 mi
43603 Toledo, OH 3.0 mi
43635 Toledo, OH 3.0 mi

Find every ZIP code within 10 miles of 43661 →

Questions about this ZIP code

Where is ZIP code 43661?

43661 is in Toledo, Ohio, in Lucas County, part of the Toledo, OH metropolitan area. Its published point location is 41.6782, -83.4972.

What county is 43661 in?

43661 lies in Lucas County.

What area code is 43661?

Toledo uses area codes 419 and 567, from NANPA's telephone records.

What time zone is 43661 in?

43661 uses America/New_York.

What ZIP codes are near 43661?

The closest are 43656 (0 mi), 43666 (0 mi), 43608 (1.6 mi), 43611 (1.8 mi) and 43605 (2.1 mi).

Is 43661 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. “43661 ZIP Code — Toledo, Ohio (Lucas County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/43661

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/43661.json

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