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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/99731

99731

ZIP 99731 is Fort Greely, Alaska, in Southeast Fairbanks Census Area; area code 907; Alaska time.

Type
No street area
Time zone
America/Anchorage
Metro area
none
Coordinates
63.9520, -146.4510

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.

☼ Live from 99731 — Fort Greely, AK

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Where 99731 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 99731
  • 🔢 Type 99731 into a pocket calculator and turn it upside down: IELGG — not quite a word, sorry.
  • ➕ As a number, 99,731 = 19 × 29 × 181. Its digits add up to 29, a total 1,296 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000010110010011
  • 🏠 Its numerical neighbours: 99730 (Central, AK, 120 mi away) and 99732 (Chicken, AK, 136 mi away).
  • 🔄 Backwards, 99731 becomes 13799, which is not a ZIP code at all.
  • 👥 16 other ZIP codes are made of exactly the same digits (19397, 19973, 31799, 31997, 37919, 39179, …). The farthest-flung twin is 31799 in Thomasville, GA, 3,496 miles away.
  • 🧭 Farther north than 99% of all ZIP codes, and farther west than 99%.
  • 🎯2,537 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99731 and you would come out at 63.95°S, 33.55°E — 1,682 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 20h 59m of daylight. Shortest: 4h 13m.
🌙 The sky over 99731 today
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Source: USGS.

Business and tax activity

Business establishments4This ZIP4
Employees44This ZIP44
Annual payroll$3,697,000This ZIP$3,697,000

Land area

ZIP codes near 99731

ZIPCityDistance
99714 Salcha, AK 29.8 mi
99737 Delta Junction, AK 49.9 mi
99702 Eielson Afb, AK 51.5 mi
99705 North Pole, AK 61.8 mi
99716 Two Rivers, AK 65.1 mi
99729 Cantwell, AK 67.8 mi
99703 Fort Wainwright, AK 70.3 mi
99710 Fairbanks, AK 71.9 mi
99711 Fairbanks, AK 71.9 mi
99775 Fairbanks, AK 75.0 mi

Find every ZIP code within 10 miles of 99731 →

Questions about this ZIP code

Where is ZIP code 99731?

99731 is in Fort Greely, Alaska, in Southeast Fairbanks Census Area. Its published point location is 63.9520, -146.4510.

What county is 99731 in?

99731 lies in Southeast Fairbanks Census Area.

What area code is 99731?

Fort Greely uses area code 907, from NANPA's telephone records.

What time zone is 99731 in?

99731 uses America/Anchorage.

What ZIP codes are near 99731?

The closest are 99714 (29.8 mi), 99737 (49.9 mi), 99702 (51.5 mi), 99705 (61.8 mi) and 99716 (65.1 mi).

Is 99731 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. “99731 ZIP Code — Fort Greely, Alaska (Southeast Fairbanks Census Area).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99731

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/99731.json

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