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zipcodes.pro — ZIP/15664

15664

ZIP 15664 is Mammoth, Pennsylvania, in Westmoreland County; area code 724; Eastern time.

Type
No street area
Time zone
America/New_York
County
Westmoreland
Metro area
Pittsburgh, PA
Coordinates
40.3108, -79.6172

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 15644, whose figures describe that area — not this ZIP code.

☼ Live from 15664 — Mammoth, PA

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Where 15664 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 15664
  • 🔢 Type 15664 into a pocket calculator and turn it upside down: hggSI — not quite a word, sorry.
  • ➕ As a number, 15,664 = 2 × 2 × 2 × 2 × 11 × 89. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11110100110000
  • 🏠 Its numerical neighbours: 15663 (Madison, PA, 5 mi away) and 15665 (Manor, PA, 3 mi away).
  • 🔄 Backwards, 15664 becomes 46651, which is not a ZIP code at all.
  • 👥 37 other ZIP codes are made of exactly the same digits (15466, 15646, 16546, 16645, 16654, 41566, …). The farthest-flung twin is 66514 in Milford, KS, 919 miles away.
  • 🧭 Farther north than 59% of all ZIP codes, and farther east than 75%.
  • 🎯1,001 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 15664 and you would come out at 40.31°S, 100.38°E — 1,037 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 18m.
🌙 The sky over 15664 today
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Source: USGS.

Business and tax activity

Business establishments3This ZIP3
Employees31This ZIP31
Annual payroll$2,028,000This ZIP$2,028,000

Land area

ZIP codes near 15664

ZIPCityDistance
15634 Grapeville, PA 1.2 mi
15611 Adamsburg, PA 1.9 mi
15675 Penn, PA 1.9 mi
15644 Jeannette, PA 2.5 mi
15665 Manor, PA 3.1 mi
15692 Westmoreland City, PA 3.5 mi
15617 Arona, PA 3.6 mi
15691 Wendel, PA 3.7 mi
15623 Claridge, PA 4.0 mi
15606 Greensburg, PA 4.2 mi

Find every ZIP code within 10 miles of 15664 →

Questions about this ZIP code

Where is ZIP code 15664?

15664 is in Mammoth, Pennsylvania, in Westmoreland County, part of the Pittsburgh, PA metropolitan area. Its published point location is 40.3108, -79.6172.

What county is 15664 in?

15664 lies in Westmoreland County.

What area code is 15664?

Mammoth uses area code 724, from NANPA's telephone records.

What time zone is 15664 in?

15664 uses America/New_York.

What ZIP codes are near 15664?

The closest are 15634 (1.2 mi), 15611 (1.9 mi), 15675 (1.9 mi), 15644 (2.5 mi) and 15665 (3.1 mi).

Is 15664 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. “15664 ZIP Code — Mammoth, Pennsylvania (Westmoreland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/15664

Machine-readable version of these facts:

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