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Where 51230 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 51230 into a pocket calculator and turn it upside down: OEZIS — not quite a word, sorry.
- ➕ As a number, 51,230 = 2 × 5 × 47 × 109. Its digits add up to 11, a total 714 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100000011110 - 🏠 Its numerical neighbours: 51201 (Sheldon, IA, 26 mi away) and 51231 (Archer, IA, 34 mi away).
- 🔄 Backwards, 51230 becomes 03215 — and that is a real ZIP code: Waterville Valley, NH, 1,240 miles away.
- 👥 73 other ZIP codes are made of exactly the same digits (01235, 01253, 01523, 01532, 02135, 02153, …). The farthest-flung twin is 02351 in Abington, MA, 1,285 miles away.
- 🧭 Farther north than 85% of all ZIP codes, and farther west than 72%.
- 🎯270 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51230 and you would come out at 43.36°S, 83.68°E — 762 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 23.6 square miles of land, 51230 is bigger than 41% of ZIP codes — room for about 18 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 478This ZIP478 |
|---|---|
| Households | 185This ZIP185 |
| Housing units | 207This ZIP207 |
| Median age | 51.2This ZIP51.2Iowa38.6US 38.9 |
| Median household income | $75,625This ZIP$75,625Iowa$75,059US $80,734 |
| Median home value | $190,800This ZIP$190,800Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 19.6%This ZIP19.6% |
| Mean commute | 26.8 minThis ZIP26.8 min |
| Population density | 20.3 / sq miThis ZIP20.3 / sq mi |
Business and tax activity
| Business establishments | 14This ZIP14 |
|---|---|
| Employees | 29This ZIP29 |
| Annual payroll | $1,368,000This ZIP$1,368,000 |
| Tax returns filed | 230This ZIP230 |
| Total adjusted gross income | $21,274,000This ZIP$21,274,000 |
Land area
| Land area | 23.55 sq miThis ZIP23.55 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 51230
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51230
| ZIP | City | Distance |
|---|---|---|
51242 | Lester, IA | 5.3 mi |
51235 | Doon, IA | 6.8 mi |
51240 | Inwood, IA | 7.6 mi |
51246 | Rock Rapids, IA | 9.4 mi |
51241 | Larchwood, IA | 9.6 mi |
51247 | Rock Valley, IA | 11.3 mi |
56173 | Steen, MN | 12.3 mi |
56138 | Hills, MN | 12.8 mi |
51239 | Hull, IA | 13.7 mi |
57027 | Fairview, SD | 15.1 mi |
Find every ZIP code within 10 miles of 51230 →
Questions about this ZIP code
Where is ZIP code 51230?
51230 is in Alvord, Iowa, in Lyon County. Its published point location is 43.3562, -96.3221.
What county is 51230 in?
51230 lies in Lyon County.
What area code is 51230?
Alvord uses area code 712, from NANPA's telephone records.
What time zone is 51230 in?
51230 uses America/Chicago.
How many people live in 51230?
About 478 people live in ZIP code 51230, in 185 households, at 20.3 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 51230?
$75,625 a year, against $75,059 across Iowa.
What ZIP codes are near 51230?
The closest are 51242 (5.3 mi), 51235 (6.8 mi), 51240 (7.6 mi), 51246 (9.4 mi) and 51241 (9.6 mi).
Is 51230 a PO Box ZIP code?
51230 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51230 ZIP Code — Alvord, Iowa (Lyon County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51230
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51230.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.