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Where 50104 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 50104 into a pocket calculator and turn it upside down: hOIOS — not quite a word, sorry.
- ➕ As a number, 50,104 = 2 × 2 × 2 × 6263. Its digits add up to 10, a total 513 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100001110111000 - 🏠 Its numerical neighbours: 50103 (Garden Grove, IA, 80 mi away) and 50105 (Gilbert, IA, 77 mi away).
- 🔄 Backwards, 50104 becomes 40105, which is not a ZIP code at all.
- 👥 27 other ZIP codes are made of exactly the same digits (01054, 01450, 01504, 01540, 04015, 04051, …). The farthest-flung twin is 04105 in Falmouth, ME, 1,131 miles away.
- 🧭 Farther north than 71% of all ZIP codes, and farther west than 62%.
- 🎯344 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 50104 and you would come out at 41.49°S, 87.61°E — 999 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 15.1 square miles of land, 50104 is bigger than 33% of ZIP codes — room for about 11 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 103This ZIP103 |
|---|---|
| Households | 52This ZIP52 |
| Housing units | 67This ZIP67 |
| Median age | 63.6This ZIP63.6Iowa38.6US 38.9 |
| Median household income | $55,625This ZIP$55,625Iowa$75,059US $80,734 |
| Median home value | $189,600This ZIP$189,600Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 8.5%This ZIP8.5% |
| Mean commute | 30.6 minThis ZIP30.6 min |
| Population density | 6.8 / sq miThis ZIP6.8 / sq mi |
Business and tax activity
| Business establishments | 5This ZIP5 |
|---|---|
| Employees | 19This ZIP19 |
| Annual payroll | $1,223,000This ZIP$1,223,000 |
Land area
| Land area | 15.10 sq miThis ZIP15.10 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Counties 50104 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Keokuk County | 64.4% |
| Poweshiek County | 26.0% |
| Mahaska County | 9.6% |
Other place names in 50104
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 50104
| ZIP | City | Distance |
|---|---|---|
50255 | Thornburg, IA | 4.0 mi |
50027 | Barnes City, IA | 4.3 mi |
50136 | Keswick, IA | 5.2 mi |
52222 | Deep River, IA | 6.2 mi |
50268 | What Cheer, IA | 6.2 mi |
50171 | Montezuma, IA | 9.4 mi |
52355 | Webster, IA | 10.4 mi |
52221 | Guernsey, IA | 10.5 mi |
52586 | Rose Hill, IA | 11.0 mi |
52550 | Delta, IA | 12.6 mi |
Find every ZIP code within 10 miles of 50104 →
Questions about this ZIP code
Where is ZIP code 50104?
50104 is in Gibson, Iowa, in Keokuk County. Its published point location is 41.4946, -92.3884.
What county is 50104 in?
50104 spans 3 counties: Keokuk County, Poweshiek County and Mahaska County. Most of it falls in Keokuk 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 time zone is 50104 in?
50104 uses America/Chicago.
How many people live in 50104?
About 103 people live in ZIP code 50104, in 52 households, at 6.8 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 50104?
$55,625 a year, against $75,059 across Iowa.
What ZIP codes are near 50104?
The closest are 50255 (4 mi), 50027 (4.3 mi), 50136 (5.2 mi), 52222 (6.2 mi) and 50268 (6.2 mi).
Is 50104 a PO Box ZIP code?
50104 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “50104 ZIP Code — Gibson, Iowa (Keokuk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50104
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/50104.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.