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/96231

96231

ZIP 96231 is military mail, not a town: APO AP, the Armed Forces Pacific routing code, which covers the Pacific. APO is the Army and Air Force Post Office. Mail to it carries a unit or ship number instead of a street, at domestic US postage.

Type
Military (APO/FPO/DPO)
Time zone
Asia/Seoul
County
none
Metro area
none
Coordinates
36.3214, 127.4197
☼ Live from 96231 — APO AP

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Where 96231 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 96231
  • 🔢 Type 96231 into a pocket calculator and turn it upside down: IEZgG — not quite a word, sorry.
  • ➕ As a number, 96,231 = 3 × 32077. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111011111100111
  • 🏠 Its numerical neighbours: 96224 (APO AA, a military post office, 112 mi away) and 96236 (APO AA, a military post office, 253 mi away).
  • 🔄 Backwards, 96231 becomes 13269, which is not a ZIP code at all.
  • 👥 44 other ZIP codes are made of exactly the same digits (12936, 13692, 16239, 16329, 16923, 16932, …). The farthest-flung twin is 32961 in Vero Beach, FL, 7,662 miles away.
  • 🧭 Farther south than 67% of all ZIP codes, and farther east than 99%.
  • 🎯6,418 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 96231 and you would come out at 36.32°S, 52.58°W — 225 miles from Montevideo, Uruguay, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 38m of daylight. Shortest: 9h 41m.
🌙 The sky over 96231 today
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Source: USGS.

Land area

ZIP codes near 96231

ZIPCityDistance
96264 APO AA, AA 46.1 mi
96271 APO AA, AA 49.2 mi
96272 APO AA, AA 49.2 mi
96278 APO AA, AA 57.4 mi
96260 APO AA, AA 59.1 mi
96266 APO AA, AA 60.6 mi
96267 APO AA, AA 60.6 mi
96261 APO AA, AA 70.7 mi
96212 APO AA, AA 72.4 mi
96213 APO AA, AA 72.4 mi

Find every ZIP code within 10 miles of 96231 →

Questions about this ZIP code

Where is ZIP code 96231?

ZIP 96231 is military mail, not a town: APO AP, the Armed Forces Pacific routing code, which covers the Pacific. APO is the Army and Air Force Post Office. Mail to it carries a unit or ship number instead of a street, at domestic US postage.

What county is 96231 in?

96231 belongs to no county — military ZIP codes are mail routing codes, not places.

What ZIP codes are near 96231?

The closest are 96264 (46.1 mi), 96271 (49.2 mi), 96272 (49.2 mi), 96278 (57.4 mi) and 96260 (59.1 mi).

Is 96231 a PO Box ZIP code?

96231 is a military (apo/fpo/dpo) ZIP code. A USPS routing code for military mail, not a geographic area.

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Cite this page

zipcodes.pro. “96231 ZIP Code — APO AP, Armed Forces Pacific (Military Mail).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/96231

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/96231.json

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