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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/79221

79221

ZIP 79221 is Aiken, Texas, in Floyd County; area code 806; Central time.

Type
No street area
Time zone
America/Chicago
County
Floyd
Metro area
Plainview, TX
Coordinates
34.1423, -101.5257

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 79241, whose figures describe that area — not this ZIP code.

☼ Live from 79221 — Aiken, TX

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Where 79221 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 79221
  • 🔢 Type 79221 into a pocket calculator and turn it upside down: IZZGL — not quite a word, sorry.
  • ➕ As a number, 79,221 = 3 × 26407. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011010101110101
  • 🏠 Its numerical neighbours: 79220 (Afton, TX, 51 mi away) and 79223 (Cee Vee, TX, 60 mi away).
  • 🔄 Backwards, 79221 becomes 12297, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (12729, 12792, 12927, 12972, 17229, 17922, …). The farthest-flung twin is 12972 in Peru, NY, 1,647 miles away.
  • 🧭 Farther south than 78% of all ZIP codes, and farther west than 80%.
  • 🎯425 miles southwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 79221 and you would come out at 34.14°S, 78.47°E — 1,132 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 26m of daylight. Shortest: 9h 52m.
🌙 The sky over 79221 today
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Source: USGS.

Land area

ZIP codes near 79221

ZIPCityDistance
79241 Lockney, TX 8.3 mi
79072 Plainview, TX 12.7 mi
79258 South Plains, TX 14.8 mi
79250 Petersburg, TX 17.6 mi
79052 Kress, TX 20.2 mi
79235 Floydada, TX 20.4 mi
79032 Edmonson, TX 23.4 mi
79041 Hale Center, TX 24.2 mi
79257 Silverton, TX 24.7 mi
79073 Plainview, TX 27.4 mi

Find every ZIP code within 10 miles of 79221 →

Questions about this ZIP code

Where is ZIP code 79221?

79221 is in Aiken, Texas, in Floyd County, part of the Plainview, TX micropolitan area. Its published point location is 34.1423, -101.5257.

What county is 79221 in?

79221 lies in Floyd County.

What area code is 79221?

Aiken uses area code 806, from NANPA's telephone records.

What time zone is 79221 in?

79221 uses America/Chicago.

What ZIP codes are near 79221?

The closest are 79241 (8.3 mi), 79072 (12.7 mi), 79258 (14.8 mi), 79250 (17.6 mi) and 79052 (20.2 mi).

Is 79221 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.

Download or cite

Cite this page

zipcodes.pro. “79221 ZIP Code — Aiken, Texas (Floyd County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/79221

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/79221.json

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