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/52243

52243

ZIP 52243 is in Iowa City, Iowa, in Johnson County; area code 319; Central time. Iowa City has 6 ZIP codes; the others are 52240, 52242, 52244, 52245 and 52246.

Type
No street area
Time zone
America/Chicago
County
Johnson
Metro area
Iowa City, IA
Coordinates
41.6611, -91.5302

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 52240, whose figures describe that area — not this ZIP code.

☼ Live from 52243 — Iowa City, IA

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Where 52243 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 52243
  • 🔢 Type 52243 into a pocket calculator and turn it upside down: EhZZS — not quite a word, sorry.
  • ➕ As a number, 52,243 = 89 × 587. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100110000010011
  • 🏠 Its numerical neighbours: 52242 (Iowa City, IA, 1 mi away) and 52244 (Iowa City, IA, 9 mi away).
  • 🔄 Backwards, 52243 becomes 34225, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (22435, 22534, 23452, 24325, 24352, 24523, …). The farthest-flung twin is 32245 in Jacksonville, FL, 955 miles away.
  • 🧭 Farther north than 72% of all ZIP codes, and farther west than 60%.
  • 🎯390 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 52243 and you would come out at 41.66°S, 88.47°E — 1,027 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 12m of daylight. Shortest: 9h 09m.
🌙 The sky over 52243 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments4This ZIP4
Employees920This ZIP920
Annual payroll$80,497,000This ZIP$80,497,000

Land area

ZIP codes near 52243

ZIPCityDistance
52242 Iowa City, IA 0.7 mi
52245 Iowa City, IA 1.2 mi
52240 Iowa City, IA 2.7 mi
52246 Iowa City, IA 3.5 mi
52241 Coralville, IA 4.3 mi
52235 Hills, IA 5.7 mi
52340 Tiffin, IA 8.2 mi
52317 North Liberty, IA 9.1 mi
52244 Iowa City, IA 9.1 mi
52333 Solon, IA 10.1 mi

Find every ZIP code within 10 miles of 52243 →

Questions about this ZIP code

Where is ZIP code 52243?

52243 is in Iowa City, Iowa, in Johnson County, part of the Iowa City, IA metropolitan area. Its published point location is 41.6611, -91.5302.

What county is 52243 in?

52243 lies in Johnson County.

What area code is 52243?

Iowa City uses area code 319, from NANPA's telephone records.

What time zone is 52243 in?

52243 uses America/Chicago.

What ZIP codes are near 52243?

The closest are 52242 (0.7 mi), 52245 (1.2 mi), 52240 (2.7 mi), 52246 (3.5 mi) and 52241 (4.3 mi).

Is 52243 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. “52243 ZIP Code — Iowa City, Iowa (Johnson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52243

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