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/74821

74821

ZIP 74821 is in Ada, Oklahoma, in Pontotoc County; area code 580; Central time. Ada has 2 ZIP codes; the other is 74820.

Type
No street area
Time zone
America/Chicago
County
Pontotoc
Metro area
Ada, OK
Coordinates
34.7745, -96.6783

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 74820, whose figures describe that area — not this ZIP code.

☼ Live from 74821 — Ada, OK

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 74821 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 74821
  • 🔢 Type 74821 into a pocket calculator and turn it upside down: IZBhL — not quite a word, sorry.
  • ➕ 74821 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10010010001000101
  • 🏠 Its numerical neighbours: 74820 (Ada, OK, 3 mi away) and 74824 (Agra, OK, 78 mi away).
  • 🔄 Backwards, 74821 becomes 12847 — and that is a real ZIP code: Long Lake, NY, 1,332 miles away.
  • 👥 49 other ZIP codes are made of exactly the same digits (12487, 12748, 12784, 12847, 12874, 14728, …). The farthest-flung twin is 12874 in Silver Bay, NY, 1,376 miles away.
  • 🧭 Farther south than 75% of all ZIP codes, and farther west than 73%.
  • 🎯364 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 74821 and you would come out at 34.77°S, 83.32°E — 1,207 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 29m of daylight. Shortest: 9h 49m.
🌙 The sky over 74821 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments24This ZIP24
Employees268This ZIP268
Annual payroll$12,848,000This ZIP$12,848,000

Land area

ZIP codes near 74821

ZIPCityDistance
74820 Ada, OK 2.9 mi
74843 Fitzhugh, OK 8.6 mi
74844 Francis, OK 8.6 mi
74842 Fittstown, OK 11.4 mi
74865 Roff, OK 13.7 mi
74871 Stonewall, OK 14.2 mi
74849 Konawa, OK 14.5 mi
74867 Sasakwa, OK 15.4 mi
74825 Allen, OK 16.6 mi
74572 Tupelo, OK 17.4 mi

Find every ZIP code within 10 miles of 74821 →

Questions about this ZIP code

Where is ZIP code 74821?

74821 is in Ada, Oklahoma, in Pontotoc County, part of the Ada, OK micropolitan area. Its published point location is 34.7745, -96.6783.

What county is 74821 in?

74821 lies in Pontotoc County.

What area code is 74821?

Ada uses area code 580, from NANPA's telephone records.

What time zone is 74821 in?

74821 uses America/Chicago.

What ZIP codes are near 74821?

The closest are 74820 (2.9 mi), 74843 (8.6 mi), 74844 (8.6 mi), 74842 (11.4 mi) and 74865 (13.7 mi).

Is 74821 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. “74821 ZIP Code — Ada, Oklahoma (Pontotoc County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/74821

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/74821.json

Underlying data is public domain or openly licensed — sources, vintages and licences.