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Where 50531 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 50531 into a pocket calculator and turn it upside down: IESOS — not quite a word, sorry.
- ➕ As a number, 50,531 = 13 × 13 × 13 × 23. Its digits add up to 14, a total 1,416 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100010101100011 - 🏠 Its numerical neighbours: 50530 (Dayton, IA, 87 mi away) and 50532 (Duncombe, IA, 75 mi away).
- 🔄 Backwards, 50531 becomes 13505 — and that is a real ZIP code: Utica, NY, 973 miles away.
- 👥 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, 1,141 miles away.
- 🧭 Farther north than 85% of all ZIP codes, and farther west than 67%.
- 🎯324 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 50531 and you would come out at 43.45°S, 85.39°E — 828 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 25m of daylight. Shortest: 8h 57m.
- 📏 At 38.8 square miles of land, 50531 is bigger than 52% of ZIP codes — room for about 29 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 325This ZIP325 |
|---|---|
| Households | 145This ZIP145 |
| Housing units | 173This ZIP173 |
| Median age | 43.7This ZIP43.7Iowa38.6US 38.9 |
| Median household income | $93,036This ZIP$93,036Iowa$75,059US $80,734 |
| Median home value | $152,000This ZIP$152,000Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 16.4%This ZIP16.4% |
| Mean commute | 29.0 minThis ZIP29.0 min |
| Population density | 8.4 / sq miThis ZIP8.4 / sq mi |
Business and tax activity
| Business establishments | 3This ZIP3 |
|---|---|
| Employees | 10This ZIP10 |
| Annual payroll | $610,000This ZIP$610,000 |
| Tax returns filed | 100This ZIP100 |
| Total adjusted gross income | $9,635,000This ZIP$9,635,000 |
Land area
| Land area | 38.80 sq miThis ZIP38.80 sq mi |
|---|---|
| Water area | 1.46 sq miThis ZIP1.46 sq mi |
Other place names in 50531
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 50531
| ZIP | City | Distance |
|---|---|---|
56121 | Ceylon, MN | 5.7 mi |
50514 | Armstrong, IA | 7.4 mi |
56127 | Dunnell, MN | 10.1 mi |
51334 | Estherville, IA | 10.3 mi |
50578 | Ringsted, IA | 10.6 mi |
51365 | Wallingford, IA | 11.8 mi |
56031 | Fairmont, MN | 14.0 mi |
56181 | Welcome, MN | 15.5 mi |
51342 | Graettinger, IA | 15.6 mi |
50590 | Swea City, IA | 15.7 mi |
Find every ZIP code within 10 miles of 50531 →
Questions about this ZIP code
Where is ZIP code 50531?
50531 is in Dolliver, Iowa, in Emmet County. Its published point location is 43.4541, -94.6098.
What county is 50531 in?
50531 lies in Emmet County.
What area code is 50531?
Dolliver uses area code 712, from NANPA's telephone records.
What time zone is 50531 in?
50531 uses America/Chicago.
How many people live in 50531?
About 325 people live in ZIP code 50531, in 145 households, at 8.4 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 50531?
$93,036 a year, against $75,059 across Iowa.
What ZIP codes are near 50531?
The closest are 56121 (5.7 mi), 50514 (7.4 mi), 56127 (10.1 mi), 51334 (10.3 mi) and 50578 (10.6 mi).
Is 50531 a PO Box ZIP code?
50531 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “50531 ZIP Code — Dolliver, Iowa (Emmet County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50531
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/50531.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.