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Where 51027 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 51027 into a pocket calculator and turn it upside down: LZOIS — not quite a word, sorry.
- ➕ As a number, 51,027 = 3 × 73 × 233. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100011101010011 - 🏠 Its numerical neighbours: 51026 (Hornick, IA, 51 mi away) and 51028 (Kingsley, IA, 31 mi away).
- 🔄 Backwards, 51027 becomes 72015 — and that is a real ZIP code: Benton, AR, 619 miles away.
- 👥 65 other ZIP codes are made of exactly the same digits (01257, 01527, 01752, 02571, 02715, 07512, …). The farthest-flung twin is 02571 in Wareham, MA, 1,306 miles away.
- 🧭 Farther north than 82% of all ZIP codes, and farther west than 72%.
- 🎯246 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51027 and you would come out at 42.97°S, 83.67°E — 779 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 21m of daylight. Shortest: 9h 00m.
- 📏 At 90.0 square miles of land, 51027 is bigger than 75% of ZIP codes — room for about 68 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,280This ZIP1,280 |
|---|---|
| Households | 415This ZIP415 |
| Housing units | 516This ZIP516 |
| Median age | 36.8This ZIP36.8Iowa38.6US 38.9 |
| Median household income | $100,893This ZIP$100,893Iowa$75,059US $80,734 |
| Median home value | $227,200This ZIP$227,200Iowa$208,000US $332,700 |
| Median gross rent | $1,094This ZIP$1,094Iowa$972US $1,413 |
| Bachelor's degree or higher | 28.6%This ZIP28.6% |
| Mean commute | 21.5 minThis ZIP21.5 min |
| Population density | 14.2 / sq miThis ZIP14.2 / sq mi |
Business and tax activity
| Business establishments | 46This ZIP46 |
|---|---|
| Employees | 194This ZIP194 |
| Annual payroll | $9,994,000This ZIP$9,994,000 |
| Tax returns filed | 540This ZIP540 |
| Total adjusted gross income | $47,134,000This ZIP$47,134,000 |
Land area
| Land area | 90.02 sq miThis ZIP90.02 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Counties 51027 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Sioux County | 83.9% |
| Plymouth County | 16.1% |
Other place names in 51027
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51027
| ZIP | City | Distance |
|---|---|---|
51036 | Maurice, IA | 7.0 mi |
51023 | Hawarden, IA | 7.4 mi |
51011 | Chatsworth, IA | 10.0 mi |
51250 | Sioux Center, IA | 10.6 mi |
51008 | Brunsville, IA | 11.1 mi |
51041 | Orange City, IA | 13.3 mi |
51031 | Le Mars, IA | 13.3 mi |
51001 | Akron, IA | 14.0 mi |
57034 | Hudson, SD | 15.1 mi |
51247 | Rock Valley, IA | 15.8 mi |
Find every ZIP code within 10 miles of 51027 →
Questions about this ZIP code
Where is ZIP code 51027?
51027 is in Ireton, Iowa, in Sioux County. Its published point location is 42.9657, -96.3279.
What county is 51027 in?
51027 spans 2 counties: Sioux County and Plymouth County. Most of it falls in Sioux 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 51027?
Ireton uses area code 712, from NANPA's telephone records.
What time zone is 51027 in?
51027 uses America/Chicago.
How many people live in 51027?
About 1,280 people live in ZIP code 51027, in 415 households, at 14.2 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 51027?
$100,893 a year, against $75,059 across Iowa.
What ZIP codes are near 51027?
The closest are 51036 (7 mi), 51023 (7.4 mi), 51011 (10 mi), 51250 (10.6 mi) and 51008 (11.1 mi).
Is 51027 a PO Box ZIP code?
51027 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51027 ZIP Code — Ireton, Iowa (Sioux County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51027
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51027.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.