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/96556

96556

ZIP 96556 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
Pacific/Honolulu
County
none
Metro area
none
Coordinates
19.7542, -155.5858
☼ Live from 96556 — APO AP

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Where 96556 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 96556
  • 🔢 Type 96556 into a pocket calculator and turn it upside down: gSSgG — not quite a word, sorry.
  • ➕ As a number, 96,556 = 2 × 2 × 101 × 239. Its digits add up to 31, a total 799 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10111100100101100
  • 🏠 Its numerical neighbours: 96554 (APO AA, a military post office, 5,096 mi away) and 96558 (APO AA, a military post office, 0 mi away). Next door on paper, a road trip in real life.
  • 🔄 Backwards, 96556 becomes 65569, which is not a ZIP code at all.
  • 👥 5 other ZIP codes are made of exactly the same digits (56569, 56659, 66955, 95656, 95665). The farthest-flung twin is 56659 in Max, MN, 3,903 miles away.
  • 🧭 Farther south than 99% of all ZIP codes, and farther west than 99%.
  • 🎯3,621 miles west of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 96556 and you would come out at 19.75°S, 24.41°E — 272 miles from Bulawayo, Zimbabwe, the nearest big city to that spot.
  • ☀Longest day of the year: 13h 19m of daylight. Shortest: 10h 56m.
🌙 The sky over 96556 today
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  • Checking the USGS…

Source: USGS.

Land area

ZIP codes near 96556

ZIPCityDistance
96558 APO AA, AA 0.0 mi
96718 Hawaii National Park, HI 14.7 mi
96745 Kailua Kona, HI 14.7 mi
96738 Waikoloa, HI 16.2 mi
96740 Kailua Kona, HI 21.7 mi
96776 Paauilo, HI 21.9 mi
96743 Kamuela, HI 22.8 mi
96710 Hakalau, HI 22.8 mi
96773 Ninole, HI 22.8 mi
96774 Ookala, HI 23.0 mi

Find every ZIP code within 10 miles of 96556 →

Questions about this ZIP code

Where is ZIP code 96556?

ZIP 96556 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 96556 in?

96556 belongs to no county — military ZIP codes are mail routing codes, not places.

What ZIP codes are near 96556?

The closest are 96558 (0 mi), 96718 (14.7 mi), 96745 (14.7 mi), 96738 (16.2 mi) and 96740 (21.7 mi).

Is 96556 a PO Box ZIP code?

96556 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. “96556 ZIP Code — APO AP, Armed Forces Pacific (Military Mail).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/96556

Machine-readable version of these facts:

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