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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/16660

16660

ZIP 16660 is Mc Connellstown, Pennsylvania, in Huntingdon County; Eastern time.

Type
No street area
Time zone
America/New_York
County
Huntingdon
Metro area
Huntingdon, PA
Coordinates
40.4025, -77.9670

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 17052, whose figures describe that area — not this ZIP code.

☼ Live from 16660 — Mc Connellstown, PA

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Where 16660 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 16660
  • 🔢 Type 16660 into a pocket calculator and turn it upside down: OgggI — not quite a word, sorry.
  • ➕ As a number, 16,660 = 2 × 2 × 5 × 7 × 7 × 17. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100000100010100
  • 🏠 Its numerical neighbours: 16659 (Loysburg, PA, 28 mi away) and 16661 (Madera, PA, 39 mi away).
  • 🔄 Backwards, 16660 becomes 06661, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (16066, 60616, 60661, 61606, 66016, 66061, …). The farthest-flung twin is 66610 in Topeka, KS, 954 miles away.
  • 🧭 Farther north than 60% of all ZIP codes, and farther east than 79%.
  • 🎯1,087 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 16660 and you would come out at 40.40°S, 102.03°E — 965 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 04m of daylight. Shortest: 9h 17m.
🌙 The sky over 16660 today
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Source: USGS.

Land area

ZIP codes near 16660

ZIPCityDistance
17002 Allensville, PA 6.5 mi
17066 Mount Union, PA 6.6 mi
16654 Huntingdon, PA 7.0 mi
17075 Newton Hamilton, PA 7.0 mi
16622 Calvin, PA 7.4 mi
16647 Hesston, PA 7.8 mi
16652 Huntingdon, PA 7.9 mi
17260 Shirleysburg, PA 8.3 mi
17052 Mapleton Depot, PA 8.7 mi
17060 Mill Creek, PA 9.5 mi

Find every ZIP code within 10 miles of 16660 →

Questions about this ZIP code

Where is ZIP code 16660?

16660 is in Mc Connellstown, Pennsylvania, in Huntingdon County, part of the Huntingdon, PA micropolitan area. Its published point location is 40.4025, -77.9670.

What county is 16660 in?

16660 lies in Huntingdon County.

What time zone is 16660 in?

16660 uses America/New_York.

What ZIP codes are near 16660?

The closest are 17002 (6.5 mi), 17066 (6.6 mi), 16654 (7 mi), 17075 (7 mi) and 16622 (7.4 mi).

Is 16660 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. “16660 ZIP Code — Mc Connellstown, Pennsylvania (Huntingdon County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/16660

Machine-readable version of these facts:

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