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Where 51350 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 51350 into a pocket calculator and turn it upside down: OSEIS — not quite a word, sorry.
- ➕ As a number, 51,350 = 2 × 5 × 5 × 13 × 79. Its digits add up to 14, a total 1,416 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100010010110 - 🏠 Its numerical neighbours: 51347 (Lake Park, IA, 16 mi away) and 51351 (Milford, IA, 21 mi away).
- 🔄 Backwards, 51350 becomes 05315, which is not a ZIP code at all.
- 👥 38 other ZIP codes are made of exactly the same digits (01355, 01535, 05153, 05351, 10535, 10553, …). The farthest-flung twin is 01535 in North Brookfield, MA, 1,191 miles away.
- 🧭 Farther north than 84% of all ZIP codes, and farther west than 70%.
- 🎯286 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51350 and you would come out at 43.31°S, 84.40°E — 793 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
- 📏 At 44.5 square miles of land, 51350 is bigger than 56% of ZIP codes — room for about 34 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 383This ZIP383 |
|---|---|
| Households | 157This ZIP157 |
| Housing units | 189This ZIP189 |
| Median age | 41.9This ZIP41.9Iowa38.6US 38.9 |
| Median household income | $77,250This ZIP$77,250Iowa$75,059US $80,734 |
| Median home value | $79,300This ZIP$79,300Iowa$208,000US $332,700 |
| Median gross rent | $390This ZIP$390Iowa$972US $1,413 |
| Bachelor's degree or higher | 9.2%This ZIP9.2% |
| Mean commute | 20.1 minThis ZIP20.1 min |
| Population density | 8.6 / sq miThis ZIP8.6 / sq mi |
Business and tax activity
| Business establishments | 4This ZIP4 |
|---|---|
| Employees | 35This ZIP35 |
| Annual payroll | $2,143,000This ZIP$2,143,000 |
| Tax returns filed | 190This ZIP190 |
| Total adjusted gross income | $13,740,000This ZIP$13,740,000 |
Land area
| Land area | 44.55 sq miThis ZIP44.55 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Counties 51350 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Osceola County | 93.4% |
| O'Brien County | 6.6% |
Other place names in 51350
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51350
| ZIP | City | Distance |
|---|---|---|
51354 | Ocheyedan, IA | 7.8 mi |
51248 | Sanborn, IA | 7.8 mi |
51249 | Sibley, IA | 9.6 mi |
51232 | Ashton, IA | 10.7 mi |
51346 | Hartley, IA | 10.8 mi |
51345 | Harris, IA | 11.4 mi |
56117 | Bigelow, MN | 15.5 mi |
51231 | Archer, IA | 15.7 mi |
51338 | Everly, IA | 15.7 mi |
51245 | Primghar, IA | 15.9 mi |
Find every ZIP code within 10 miles of 51350 →
Questions about this ZIP code
Where is ZIP code 51350?
51350 is in Melvin, Iowa, in Osceola County. Its published point location is 43.3075, -95.5983.
What county is 51350 in?
51350 spans 2 counties: Osceola County and O'Brien County. Most of it falls in Osceola 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 51350?
Melvin uses area code 712, from NANPA's telephone records.
What time zone is 51350 in?
51350 uses America/Chicago.
How many people live in 51350?
About 383 people live in ZIP code 51350, in 157 households, at 8.6 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 51350?
$77,250 a year, against $75,059 across Iowa.
What ZIP codes are near 51350?
The closest are 51354 (7.8 mi), 51248 (7.8 mi), 51249 (9.6 mi), 51232 (10.7 mi) and 51346 (10.8 mi).
Is 51350 a PO Box ZIP code?
51350 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51350 ZIP Code — Melvin, Iowa (Osceola County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51350
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51350.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.