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/64121

64121

ZIP 64121 is in Kansas City, Missouri, in Jackson County; area codes 816 and 975; Central time. Kansas City has 71 ZIP codes in all.

Type
No street area
Time zone
America/Chicago
County
Jackson
Metro area
Kansas City, MO-KS
Coordinates
39.0997, -94.5786

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 64106, whose figures describe that area — not this ZIP code.

☼ Live from 64121 — Kansas City, MO

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Where 64121 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 64121
  • 🔢 Type 64121 into a pocket calculator and turn it upside down: IZIhg — not quite a word, sorry.
  • ➕ As a number, 64,121 = 37 × 1733. Its digits add up to 14, a total 1,416 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111101001111001
  • 🏠 Its numerical neighbours: 64120 (Kansas City, MO, 4 mi away) and 64123 (Kansas City, MO, 3 mi away).
  • 🔄 Backwards, 64121 becomes 12146, which is not a ZIP code at all.
  • 👥 30 other ZIP codes are made of exactly the same digits (11426, 12164, 12416, 12461, 14126, 14216, …). The farthest-flung twin is 11426 in Bellerose, NY, 1,108 miles away.
  • 🧭 Farther south than 50% of all ZIP codes, and farther west than 67%.
  • 🎯219 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 64121 and you would come out at 39.10°S, 85.42°E — 1,030 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 55m of daylight. Shortest: 9h 25m.
🌙 The sky over 64121 today
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Source: USGS.

Land area

ZIP codes near 64121

ZIPCityDistance
64141 Kansas City, MO 0.0 mi
64148 Kansas City, MO 0.0 mi
64170 Kansas City, MO 0.0 mi
64171 Kansas City, MO 0.0 mi
64179 Kansas City, MO 0.0 mi
64180 Kansas City, MO 0.0 mi
64184 Kansas City, MO 0.0 mi
64187 Kansas City, MO 0.0 mi
64188 Kansas City, MO 0.0 mi
64191 Kansas City, MO 0.0 mi

Find every ZIP code within 10 miles of 64121 →

Questions about this ZIP code

Where is ZIP code 64121?

64121 is in Kansas City, Missouri, in Jackson County, part of the Kansas City, MO-KS metropolitan area. Its published point location is 39.0997, -94.5786.

What county is 64121 in?

64121 lies in Jackson County.

What area code is 64121?

Kansas City uses area codes 816 and 975, from NANPA's telephone records.

What time zone is 64121 in?

64121 uses America/Chicago.

What ZIP codes are near 64121?

The closest are 64141 (0 mi), 64148 (0 mi), 64170 (0 mi), 64171 (0 mi) and 64179 (0 mi).

Is 64121 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. “64121 ZIP Code — Kansas City, Missouri (Jackson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/64121

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