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Where 50551 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.
- 🔢 Type 50551 into a pocket calculator and turn it upside down: ISSOS — not quite a word, sorry.
- ➕ 50551 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 16, a total 1,922 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100010101110111 - 🏠 Its numerical neighbours: 50548 (Humboldt, IA, 31 mi away) and 50552 (Knierim, IA, 15 mi away).
- 🔄 Backwards, 50551 becomes 15505, which is not a ZIP code at all.
- 👥 10 other ZIP codes are made of exactly the same digits (05155, 15055, 15550, 50155, 50515, 51055, …). The farthest-flung twin is 05155 in South Londonderry, VT, 1,109 miles away.
- 🧭 Farther north than 79% of all ZIP codes, and farther west than 68%.
- 🎯271 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 50551 and you would come out at 42.48°S, 85.25°E — 862 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 26.9 square miles of land, 50551 is bigger than 43% of ZIP codes — room for about 20 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 96This ZIP96 |
|---|---|
| Households | 30This ZIP30 |
| Housing units | 42This ZIP42 |
| Median age | 37.2This ZIP37.2Iowa38.6US 38.9 |
| Median home value | $51,100This ZIP$51,100Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 0.0% |
| Population density | 3.6 / sq miThis ZIP3.6 / sq mi |
Business and tax activity
| Business establishments | 3This ZIP3 |
|---|---|
| Employees | 3This ZIP3 |
| Annual payroll | $58,000This ZIP$58,000 |
Land area
| Land area | 26.94 sq miThis ZIP26.94 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 50551
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 50551
| ZIP | City | Distance |
|---|---|---|
50575 | Pomeroy, IA | 6.0 mi |
50561 | Lytton, IA | 6.6 mi |
50579 | Rockwell City, IA | 8.7 mi |
50540 | Fonda, IA | 9.1 mi |
50563 | Manson, IA | 12.1 mi |
50583 | Sac City, IA | 12.3 mi |
50571 | Palmer, IA | 13.8 mi |
50593 | Varina, IA | 14.2 mi |
51449 | Lake City, IA | 15.0 mi |
50552 | Knierim, IA | 15.1 mi |
Find every ZIP code within 10 miles of 50551 →
Questions about this ZIP code
Where is ZIP code 50551?
50551 is in Jolley, Iowa, in Calhoun County. Its published point location is 42.4824, -94.7549.
What county is 50551 in?
50551 lies in Calhoun County.
What area code is 50551?
Jolley uses area code 712, from NANPA's telephone records.
What time zone is 50551 in?
50551 uses America/Chicago.
How many people live in 50551?
About 96 people live in ZIP code 50551, in 30 households, at 3.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 50551?
The closest are 50575 (6 mi), 50561 (6.6 mi), 50579 (8.7 mi), 50540 (9.1 mi) and 50563 (12.1 mi).
Is 50551 a PO Box ZIP code?
50551 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “50551 ZIP Code — Jolley, Iowa (Calhoun County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50551
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/50551.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.