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Where 51249 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 51249 into a pocket calculator and turn it upside down: GhZIS — not quite a word, sorry.
- ➕ As a number, 51,249 = 3 × 11 × 1553. Its digits add up to 21, a total 2,594 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100000110001 - 🏠 Its numerical neighbours: 51248 (Sanborn, IA, 14 mi away) and 51250 (Sioux Center, IA, 32 mi away).
- 🔄 Backwards, 51249 becomes 94215, which is not a ZIP code at all.
- 👥 47 other ZIP codes are made of exactly the same digits (12459, 12495, 12549, 12594, 12945, 14529, …). The farthest-flung twin is 95412 in Annapolis, CA, 1,466 miles away.
- 🧭 Farther north than 85% of all ZIP codes, and farther west than 71%.
- 🎯288 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51249 and you would come out at 43.41°S, 84.27°E — 784 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 126.6 square miles of land, 51249 is bigger than 83% of ZIP codes — room for about 96 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,564This ZIP3,564 |
|---|---|
| Households | 1,458This ZIP1,458 |
| Housing units | 1,579This ZIP1,579 |
| Median age | 41.4This ZIP41.4Iowa38.6US 38.9 |
| Median household income | $61,500This ZIP$61,500Iowa$75,059US $80,734 |
| Median home value | $160,700This ZIP$160,700Iowa$208,000US $332,700 |
| Median gross rent | $774This ZIP$774Iowa$972US $1,413 |
| Bachelor's degree or higher | 21.2%This ZIP21.2% |
| Mean commute | 16.4 minThis ZIP16.4 min |
| Population density | 28.2 / sq miThis ZIP28.2 / sq mi |
Business and tax activity
| Business establishments | 129This ZIP129 |
|---|---|
| Employees | 1,510This ZIP1,510 |
| Annual payroll | $63,995,000This ZIP$63,995,000 |
| Tax returns filed | 1,560This ZIP1,560 |
| Total adjusted gross income | $112,447,000This ZIP$112,447,000 |
Land area
| Land area | 126.59 sq miThis ZIP126.59 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
Other place names in 51249
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51249
| ZIP | City | Distance |
|---|---|---|
56117 | Bigelow, MN | 8.3 mi |
51243 | Little Rock, IA | 8.6 mi |
51232 | Ashton, IA | 8.7 mi |
51354 | Ocheyedan, IA | 9.4 mi |
51350 | Melvin, IA | 9.6 mi |
56168 | Rushmore, MN | 14.4 mi |
51237 | George, IA | 14.4 mi |
51248 | Sanborn, IA | 14.5 mi |
51345 | Harris, IA | 14.8 mi |
51244 | Matlock, IA | 15.2 mi |
Find every ZIP code within 10 miles of 51249 →
Questions about this ZIP code
Where is ZIP code 51249?
51249 is in Sibley, Iowa, in Osceola County. Its published point location is 43.4074, -95.7310.
What county is 51249 in?
51249 lies in Osceola County.
What area code is 51249?
Sibley uses area code 712, from NANPA's telephone records.
What time zone is 51249 in?
51249 uses America/Chicago.
How many people live in 51249?
About 3,564 people live in ZIP code 51249, in 1,458 households, at 28.2 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 51249?
$61,500 a year, against $75,059 across Iowa.
What ZIP codes are near 51249?
The closest are 56117 (8.3 mi), 51243 (8.6 mi), 51232 (8.7 mi), 51354 (9.4 mi) and 51350 (9.6 mi).
Is 51249 a PO Box ZIP code?
51249 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51249 ZIP Code — Sibley, Iowa (Osceola County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51249
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51249.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.