51366
ZIP 51366 is Webb, Iowa, mostly in Clay County; area code 712; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Clay +1 more
- Metro area
- Spencer, IA
- Population
- 245
- Coordinates
- 42.9607, -95.0030
Weather right now
Asking the National Weather Service…
Where 51366 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 51366 into a pocket calculator and turn it upside down: ggEIS — not quite a word, sorry.
- ➕ As a number, 51,366 = 2 × 3 × 7 × 1223. Its digits add up to 21, a total 2,594 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100010100110 - 🏠 Its numerical neighbours: 51365 (Wallingford, IA, 28 mi away) and 51401 (Carroll, IA, 62 mi away).
- 🔄 Backwards, 51366 becomes 66315, which is not a ZIP code at all.
- 👥 29 other ZIP codes are made of exactly the same digits (13656, 13665, 15366, 15636, 15663, 16365, …). The farthest-flung twin is 31566 in Waynesville, GA, 1,089 miles away.
- 🧭 Farther north than 82% of all ZIP codes, and farther west than 68%.
- 🎯285 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51366 and you would come out at 42.96°S, 85.00°E — 832 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 62.3 square miles of land, 51366 is bigger than 66% of ZIP codes — room for about 47 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 245This ZIP245 |
|---|---|
| Households | 104This ZIP104 |
| Housing units | 123This ZIP123 |
| Median age | 50.8This ZIP50.8Iowa38.6US 38.9 |
| Median household income | $87,500This ZIP$87,500Iowa$75,059US $80,734 |
| Median home value | $130,800This ZIP$130,800Iowa$208,000US $332,700 |
| Median gross rent | $681This ZIP$681Iowa$972US $1,413 |
| Bachelor's degree or higher | 13.8%This ZIP13.8% |
| Mean commute | 19.1 minThis ZIP19.1 min |
| Population density | 3.9 / sq miThis ZIP3.9 / sq mi |
Business and tax activity
| Business establishments | 6This ZIP6 |
|---|---|
| Employees | 8This ZIP8 |
| Annual payroll | $383,000This ZIP$383,000 |
| Tax returns filed | 150This ZIP150 |
| Total adjusted gross income | $13,833,000This ZIP$13,833,000 |
Land area
| Land area | 62.33 sq miThis ZIP62.33 sq mi |
|---|---|
| Water area | 0.05 sq miThis ZIP0.05 sq mi |
Counties 51366 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Clay County | 97.3% |
| Buena Vista County | 2.7% |
Other place names in 51366
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51366
| ZIP | City | Distance |
|---|---|---|
51341 | Gillett Grove, IA | 4.3 mi |
50515 | Ayrshire, IA | 7.1 mi |
50565 | Marathon, IA | 7.1 mi |
51343 | Greenville, IA | 7.4 mi |
50585 | Sioux Rapids, IA | 7.6 mi |
50527 | Curlew, IA | 10.7 mi |
50554 | Laurens, IA | 11.4 mi |
51333 | Dickens, IA | 12.2 mi |
51358 | Ruthven, IA | 12.9 mi |
51033 | Linn Grove, IA | 12.9 mi |
Find every ZIP code within 10 miles of 51366 →
Questions about this ZIP code
Where is ZIP code 51366?
51366 is in Webb, Iowa, in Clay County, part of the Spencer, IA micropolitan area. Its published point location is 42.9607, -95.0030.
What county is 51366 in?
51366 spans 2 counties: Clay County and Buena Vista County. Most of it falls in Clay 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 51366?
Webb uses area code 712, from NANPA's telephone records.
What time zone is 51366 in?
51366 uses America/Chicago.
How many people live in 51366?
About 245 people live in ZIP code 51366, in 104 households, at 3.9 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 51366?
$87,500 a year, against $75,059 across Iowa.
What ZIP codes are near 51366?
The closest are 51341 (4.3 mi), 50515 (7.1 mi), 50565 (7.1 mi), 51343 (7.4 mi) and 50585 (7.6 mi).
Is 51366 a PO Box ZIP code?
51366 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51366 ZIP Code — Webb, Iowa (Clay County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51366
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51366.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.