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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/99821

99821

ZIP 99821 is Auke Bay, Alaska, in Juneau City and Borough; area code 907; Alaska time.

Type
No street area
Time zone
America/Juneau
County
Juneau
Metro area
Juneau, AK
Coordinates
58.4494, -134.7003

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 99801, whose figures describe that area — not this ZIP code.

☼ Live from 99821 — Auke Bay, AK

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Where 99821 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 99821
  • 🔢 Type 99821 into a pocket calculator and turn it upside down: IZBGG — not quite a word, sorry.
  • ➕ As a number, 99,821 = 173 × 577. Its digits add up to 29, a total 1,296 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11000010111101101
  • 🏠 Its numerical neighbours: 99820 (Angoon, AK, 76 mi away) and 99824 (Douglas, AK, 17 mi away).
  • 🔄 Backwards, 99821 becomes 12899, which is not a ZIP code at all.
  • 👥 14 other ZIP codes are made of exactly the same digits (12989, 12998, 18929, 19892, 29819, 29918, …). The farthest-flung twin is 29918 in Estill, SC, 3,019 miles away.
  • 🧭 Farther north than 99% of all ZIP codes, and farther west than 99%.
  • 🎯2,038 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 99821 and you would come out at 58.45°S, 45.30°E — 1,183 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 18h 19m of daylight. Shortest: 6h 20m.
🌙 The sky over 99821 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments6This ZIP6
Employees7This ZIP7
Annual payroll$640,000This ZIP$640,000

Land area

ZIP codes near 99821

ZIPCityDistance
99812 Juneau, AK 11.8 mi
99802 Juneau, AK 14.4 mi
99803 Juneau, AK 14.4 mi
99811 Juneau, AK 14.4 mi
99824 Douglas, AK 16.7 mi
99801 Juneau, AK 19.6 mi
99850 Juneau, AK 28.5 mi
99829 Hoonah, AK 36.7 mi
99826 Gustavus, AK 40.2 mi
99841 Tenakee Springs, AK 45.3 mi

Find every ZIP code within 10 miles of 99821 →

Questions about this ZIP code

Where is ZIP code 99821?

99821 is in Auke Bay, Alaska, in Juneau City and Borough, part of the Juneau, AK micropolitan area. Its published point location is 58.4494, -134.7003.

What county is 99821 in?

99821 lies in Juneau City and Borough.

What area code is 99821?

Auke Bay uses area code 907, from NANPA's telephone records.

What time zone is 99821 in?

99821 uses America/Juneau.

What ZIP codes are near 99821?

The closest are 99812 (11.8 mi), 99802 (14.4 mi), 99803 (14.4 mi), 99811 (14.4 mi) and 99824 (16.7 mi).

Is 99821 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. “99821 ZIP Code — Auke Bay, Alaska (Juneau City and Borough).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/99821

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/99821.json

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