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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/50552

50552

ZIP 50552 is Knierim, Iowa, in Calhoun County; area code 515; Central time.

Type
Standard
Time zone
America/Chicago
County
Calhoun
Metro area
none
Population
76
Coordinates
42.4564, -94.4607
☼ Live from 50552 — Knierim, IA

Weather right now

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NEXRAD radar
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Local time: —

Where 50552 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 50552
  • 🔢 Type 50552 into a pocket calculator and turn it upside down: ZSSOS — not quite a word, sorry.
  • ➕ As a number, 50,552 = 2 × 2 × 2 × 71 × 89. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100010101111000
  • 🏠 Its numerical neighbours: 50551 (Jolley, IA, 15 mi away) and 50554 (Laurens, IA, 33 mi away).
  • 🔄 Backwards, 50552 becomes 25505 — and that is a real ZIP code: Big Creek, WV, 723 miles away.
  • 👥 9 other ZIP codes are made of exactly the same digits (05255, 20555, 25505, 25550, 50255, 50525, …). The farthest-flung twin is 05255 in Manchester Center, VT, 1,085 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther west than 67%.
  • 🎯281 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 50552 and you would come out at 42.46°S, 85.54°E — 875 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
  • 📏 At 0.500 square miles of land, 50552 is bigger than 5% of ZIP codes — about 242 football fields.
🌙 The sky over 50552 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population76This ZIP76
Households26This ZIP26
Housing units35This ZIP35
Median age49.3This ZIP49.3Iowa38.6US 38.9
Median household income$89,000This ZIP$89,000Iowa$75,059US $80,734
Median home value$112,500This ZIP$112,500Iowa$208,000US $332,700
Bachelor's degree or higher54.3%This ZIP54.3%
Mean commute22.9 minThis ZIP22.9 min
Population density152.0 / sq miThis ZIP152.0 / sq mi

Land area

Land area0.50 sq miThis ZIP0.50 sq mi
Water area0.00 sq mi

Other place names in 50552

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 50552

ZIPCityDistance
50586 Somers, IA 3.6 mi
50518 Barnum, IA 5.5 mi
50563 Manson, IA 5.9 mi
50566 Moorland, IA 7.1 mi
50579 Rockwell City, IA 9.8 mi
50523 Callender, IA 10.5 mi
50524 Clare, IA 10.8 mi
50538 Farnhamville, IA 12.0 mi
50571 Palmer, IA 13.8 mi
51453 Lohrville, IA 14.1 mi

Find every ZIP code within 10 miles of 50552 →

Questions about this ZIP code

Where is ZIP code 50552?

50552 is in Knierim, Iowa, in Calhoun County. Its published point location is 42.4564, -94.4607.

What county is 50552 in?

50552 lies in Calhoun County.

What area code is 50552?

Knierim uses area code 515, from NANPA's telephone records.

What time zone is 50552 in?

50552 uses America/Chicago.

How many people live in 50552?

About 76 people live in ZIP code 50552, in 26 households, at 152.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 50552?

$89,000 a year, against $75,059 across Iowa.

What ZIP codes are near 50552?

The closest are 50586 (3.6 mi), 50518 (5.5 mi), 50563 (5.9 mi), 50566 (7.1 mi) and 50579 (9.8 mi).

Is 50552 a PO Box ZIP code?

50552 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “50552 ZIP Code — Knierim, Iowa (Calhoun County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50552

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