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/62866

62866

ZIP 62866 is Nason, Illinois, in Jefferson County; area code 618; Central time.

Type
No street area
Time zone
America/Chicago
County
Jefferson
Metro area
Mount Vernon, IL
Coordinates
38.1654, -88.9676

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 62816, whose figures describe that area — not this ZIP code.

☼ Live from 62866 — Nason, IL

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 62866 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 62866
  • 🔢 Type 62866 into a pocket calculator and turn it upside down: ggBZg — not quite a word, sorry.
  • ➕ As a number, 62,866 = 2 × 17 × 43 × 43. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111010110010010
  • 🏠 Its numerical neighbours: 62865 (Mulkeytown, IL, 15 mi away) and 62867 (New Haven, IL, 50 mi away).
  • 🔄 Backwards, 62866 becomes 66826, which is not a ZIP code at all.
  • 👥 7 other ZIP codes are made of exactly the same digits (26866, 28666, 62668, 66286, 66862, 68626, …). The farthest-flung twin is 26866 in Upper Tract, WV, 527 miles away.
  • 🧭 Farther south than 57% of all ZIP codes, and farther west than 53%.
  • 🎯528 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 62866 and you would come out at 38.17°S, 91.03°E — 1,287 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 49m of daylight. Shortest: 9h 30m.
🌙 The sky over 62866 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Land area

ZIP codes near 62866

ZIPCityDistance
62816 Bonnie, IL 3.0 mi
62894 Waltonville, IL 5.0 mi
62897 Whittington, IL 5.8 mi
62846 Ina, IL 6.2 mi
62884 Sesser, IL 6.9 mi
62883 Scheller, IL 7.4 mi
62836 Ewing, IL 10.1 mi
62891 Valier, IL 11.1 mi
62812 Benton, IL 11.3 mi
62872 Opdyke, IL 11.7 mi

Find every ZIP code within 10 miles of 62866 →

Questions about this ZIP code

Where is ZIP code 62866?

62866 is in Nason, Illinois, in Jefferson County, part of the Mount Vernon, IL micropolitan area. Its published point location is 38.1654, -88.9676.

What county is 62866 in?

62866 lies in Jefferson County.

What area code is 62866?

Nason uses area code 618, from NANPA's telephone records.

What time zone is 62866 in?

62866 uses America/Chicago.

What ZIP codes are near 62866?

The closest are 62816 (3 mi), 62894 (5 mi), 62897 (5.8 mi), 62846 (6.2 mi) and 62884 (6.9 mi).

Is 62866 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. “62866 ZIP Code — Nason, Illinois (Jefferson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/62866

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/62866.json

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