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Where 50591 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 50591 into a pocket calculator and turn it upside down: IGSOS — not quite a word, sorry.
- ➕ 50591 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100010110011111 - 🏠 Its numerical neighbours: 50590 (Swea City, IA, 52 mi away) and 50592 (Truesdale, IA, 57 mi away).
- 🔄 Backwards, 50591 becomes 19505 — and that is a real ZIP code: Bechtelsville, PA, 965 miles away.
- 👥 21 other ZIP codes are made of exactly the same digits (05159, 10595, 15059, 15095, 15905, 19055, …). The farthest-flung twin is 95501 in Eureka, CA, 1,549 miles away.
- 🧭 Farther north than 80% of all ZIP codes, and farther west than 66%.
- 🎯306 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 50591 and you would come out at 42.68°S, 85.95°E — 882 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 02m.
- 📏 At 29.4 square miles of land, 50591 is bigger than 45% of ZIP codes — room for about 22 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 405This ZIP405 |
|---|---|
| Households | 194This ZIP194 |
| Housing units | 207This ZIP207 |
| Median age | 50.5This ZIP50.5Iowa38.6US 38.9 |
| Median household income | $75,000This ZIP$75,000Iowa$75,059US $80,734 |
| Median home value | $162,500This ZIP$162,500Iowa$208,000US $332,700 |
| Median gross rent | $1,075This ZIP$1,075Iowa$972US $1,413 |
| Bachelor's degree or higher | 9.9%This ZIP9.9% |
| Mean commute | 17.2 minThis ZIP17.2 min |
| Population density | 13.8 / sq miThis ZIP13.8 / sq mi |
Business and tax activity
| Business establishments | 9This ZIP9 |
|---|---|
| Employees | 27This ZIP27 |
| Annual payroll | $1,048,000This ZIP$1,048,000 |
| Tax returns filed | 130This ZIP130 |
| Total adjusted gross income | $9,945,000This ZIP$9,945,000 |
Land area
| Land area | 29.42 sq miThis ZIP29.42 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Counties 50591 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Humboldt County | 88.1% |
| Webster County | 11.9% |
Other place names in 50591
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 50591
| ZIP | City | Distance |
|---|---|---|
50516 | Badger, IA | 5.5 mi |
50594 | Vincent, IA | 6.4 mi |
50533 | Eagle Grove, IA | 7.5 mi |
50529 | Dakota City, IA | 8.1 mi |
50545 | Hardy, IA | 8.4 mi |
50548 | Humboldt, IA | 8.9 mi |
50542 | Goldfield, IA | 9.3 mi |
50577 | Renwick, IA | 13.1 mi |
50599 | Woolstock, IA | 13.6 mi |
50558 | Livermore, IA | 13.9 mi |
Find every ZIP code within 10 miles of 50591 →
Questions about this ZIP code
Where is ZIP code 50591?
50591 is in Thor, Iowa, in Humboldt County. Its published point location is 42.6768, -94.0548.
What county is 50591 in?
50591 spans 2 counties: Humboldt County and Webster County. Most of it falls in Humboldt County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 50591?
Thor uses area code 515, from NANPA's telephone records.
What time zone is 50591 in?
50591 uses America/Chicago.
How many people live in 50591?
About 405 people live in ZIP code 50591, in 194 households, at 13.8 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 50591?
$75,000 a year, against $75,059 across Iowa.
What ZIP codes are near 50591?
The closest are 50516 (5.5 mi), 50594 (6.4 mi), 50533 (7.5 mi), 50529 (8.1 mi) and 50545 (8.4 mi).
Is 50591 a PO Box ZIP code?
50591 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “50591 ZIP Code — Thor, Iowa (Humboldt County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50591
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/50591.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.