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Where 50255 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 50255 into a pocket calculator and turn it upside down: SSZOS — not quite a word, sorry.
- ➕ As a number, 50,255 = 5 × 19 × 23 × 23. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100010001001111 - 🏠 Its numerical neighbours: 50254 (Thayer, IA, 95 mi away) and 50256 (Tracy, IA, 33 mi away).
- 🔄 Backwards, 50255 becomes 55205, which is not a ZIP code at all.
- 👥 9 other ZIP codes are made of exactly the same digits (05255, 20555, 25505, 25550, 50525, 50552, …). The farthest-flung twin is 05255 in Manchester Center, VT, 991 miles away.
- 🧭 Farther north than 70% of all ZIP codes, and farther west than 62%.
- 🎯346 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 50255 and you would come out at 41.46°S, 87.67°E — 1,003 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 11m of daylight. Shortest: 9h 10m.
- 📏 At 0.191 square miles of land, 50255 is bigger than 2% of ZIP codes — about 92 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 51This ZIP51 |
|---|---|
| Households | 26This ZIP26 |
| Housing units | 26This ZIP26 |
| Median age | 57.8This ZIP57.8Iowa38.6US 38.9 |
| Median household income | $39,722This ZIP$39,722Iowa$75,059US $80,734 |
| Bachelor's degree or higher | 34.8%This ZIP34.8% |
| Mean commute | 33.6 minThis ZIP33.6 min |
| Population density | 267.0 / sq miThis ZIP267.0 / sq mi |
Land area
| Land area | 0.19 sq miThis ZIP0.19 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 50255
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 50255
| ZIP | City | Distance |
|---|---|---|
50136 | Keswick, IA | 2.2 mi |
50268 | What Cheer, IA | 3.7 mi |
50104 | Gibson, IA | 4.0 mi |
52355 | Webster, IA | 7.3 mi |
50027 | Barnes City, IA | 7.3 mi |
52222 | Deep River, IA | 8.3 mi |
52550 | Delta, IA | 9.9 mi |
52586 | Rose Hill, IA | 10.2 mi |
52308 | Millersburg, IA | 12.1 mi |
52591 | Sigourney, IA | 12.1 mi |
Find every ZIP code within 10 miles of 50255 →
Questions about this ZIP code
Where is ZIP code 50255?
50255 is in Thornburg, Iowa, in Keokuk County. Its published point location is 41.4559, -92.3321.
What county is 50255 in?
50255 lies in Keokuk County.
What time zone is 50255 in?
50255 uses America/Chicago.
How many people live in 50255?
About 51 people live in ZIP code 50255, in 26 households, at 267.0 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 50255?
$39,722 a year, against $75,059 across Iowa.
What ZIP codes are near 50255?
The closest are 50136 (2.2 mi), 50268 (3.7 mi), 50104 (4 mi), 52355 (7.3 mi) and 50027 (7.3 mi).
Is 50255 a PO Box ZIP code?
50255 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “50255 ZIP Code — Thornburg, Iowa (Keokuk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50255
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/50255.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.