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Where 56431 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 56431 into a pocket calculator and turn it upside down: IEhgS — not quite a word, sorry.
- ➕ 56431 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1101110001101111 - 🏠 Its numerical neighbours: 56430 (Ah Gwah Ching, MN, 60 mi away) and 56433 (Akeley, MN, 59 mi away).
- 🔄 Backwards, 56431 becomes 13465 — and that is a real ZIP code: Solsville, NY, 921 miles away.
- 👥 60 other ZIP codes are made of exactly the same digits (13456, 13465, 13645, 13654, 14536, 14563, …). The farthest-flung twin is 31546 in Jesup, GA, 1,210 miles away.
- 🧭 Farther north than 94% of all ZIP codes, and farther west than 65%.
- 🎯523 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 56431 and you would come out at 46.49°S, 86.36°E — 772 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 49m of daylight. Shortest: 8h 34m.
- 📏 At 462.8 square miles of land, 56431 is bigger than 97% of ZIP codes — room for about 351 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 9,312This ZIP9,312 |
|---|---|
| Households | 4,099This ZIP4,099 |
| Housing units | 7,068This ZIP7,068 |
| Median age | 56.6This ZIP56.6Minnesota38.8US 38.9 |
| Median household income | $67,828This ZIP$67,828Minnesota$89,062US $80,734 |
| Median home value | $295,400This ZIP$295,400Minnesota$329,300US $332,700 |
| Median gross rent | $829This ZIP$829Minnesota$1,280US $1,413 |
| Bachelor's degree or higher | 23.2%This ZIP23.2% |
| Mean commute | 21.0 minThis ZIP21.0 min |
| Population density | 20.1 / sq miThis ZIP20.1 / sq mi |
Business and tax activity
| Business establishments | 258This ZIP258 |
|---|---|
| Employees | 2,392This ZIP2,392 |
| Annual payroll | $126,915,000This ZIP$126,915,000 |
| Tax returns filed | 4,430This ZIP4,430 |
| Total adjusted gross income | $311,767,000This ZIP$311,767,000 |
Land area
| Land area | 462.77 sq miThis ZIP462.77 sq mi |
|---|---|
| Water area | 127.54 sq miThis ZIP127.54 sq mi |
Counties 56431 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Aitkin County | 84.7% |
| Crow Wing County | 15.3% |
Other place names in 56431
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 56431
| ZIP | City | Distance |
|---|---|---|
56444 | Deerwood, MN | 12.6 mi |
56441 | Crosby, MN | 17.5 mi |
56455 | Ironton, MN | 17.7 mi |
56450 | Garrison, MN | 20.2 mi |
56469 | Palisade, MN | 20.3 mi |
56447 | Emily, MN | 20.4 mi |
55760 | Mcgregor, MN | 20.8 mi |
56465 | Merrifield, MN | 23.0 mi |
56350 | Mc Grath, MN | 23.2 mi |
56342 | Isle, MN | 24.7 mi |
Find every ZIP code within 10 miles of 56431 →
Questions about this ZIP code
Where is ZIP code 56431?
56431 is in Aitkin, Minnesota, in Aitkin County. Its published point location is 46.4911, -93.6356.
What county is 56431 in?
56431 spans 2 counties: Aitkin County and Crow Wing County. Most of it falls in Aitkin 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 56431?
Aitkin uses area code 218, from NANPA's telephone records.
What time zone is 56431 in?
56431 uses America/Chicago.
How many people live in 56431?
About 9,312 people live in ZIP code 56431, in 4,099 households, at 20.1 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 56431?
$67,828 a year, against $89,062 across Minnesota.
What ZIP codes are near 56431?
The closest are 56444 (12.6 mi), 56441 (17.5 mi), 56455 (17.7 mi), 56450 (20.2 mi) and 56469 (20.3 mi).
Is 56431 a PO Box ZIP code?
56431 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “56431 ZIP Code — Aitkin, Minnesota (Aitkin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/56431
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/56431.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.