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Where 57401 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 57401 into a pocket calculator and turn it upside down: IOhLS — not quite a word, sorry.
- ➕ As a number, 57,401 = 61 × 941. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000000111001 - 🏠 Its numerical neighbours: 57399 (Huron, SD, 79 mi away) and 57402 (Aberdeen, SD, 11 mi away).
- 🔄 Backwards, 57401 becomes 10475 — and that is a real ZIP code: Bronx, NY, 1,279 miles away.
- 👥 64 other ZIP codes are made of exactly the same digits (01475, 01745, 01754, 04571, 04751, 05471, …). The farthest-flung twin is 04751 in Limestone, ME, 1,456 miles away.
- 🧭 Farther north than 92% of all ZIP codes, and farther west than 78%.
- 🎯391 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57401 and you would come out at 45.48°S, 81.47°E — 589 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 41m of daylight. Shortest: 8h 42m.
- 📏 At 278.8 square miles of land, 57401 is bigger than 94% of ZIP codes — room for about 212 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 31,939This ZIP31,939 |
|---|---|
| Households | 13,894This ZIP13,894 |
| Housing units | 15,182This ZIP15,182 |
| Median age | 37.2This ZIP37.2South Dakota38.0US 38.9 |
| Median household income | $68,835This ZIP$68,835South Dakota$75,081US $80,734 |
| Median home value | $226,200This ZIP$226,200South Dakota$257,400US $332,700 |
| Median gross rent | $766This ZIP$766South Dakota$946US $1,413 |
| Bachelor's degree or higher | 35.6%This ZIP35.6% |
| Mean commute | 12.7 minThis ZIP12.7 min |
| Population density | 114.6 / sq miThis ZIP114.6 / sq mi |
Business and tax activity
| Business establishments | 1,050This ZIP1,050 |
|---|---|
| Employees | 15,817This ZIP15,817 |
| Annual payroll | $767,485,000This ZIP$767,485,000 |
| Tax returns filed | 15,230This ZIP15,230 |
| Total adjusted gross income | $1,289,595,000This ZIP$1,289,595,000 |
Land area
| Land area | 278.81 sq miThis ZIP278.81 sq mi |
|---|---|
| Water area | 1.68 sq miThis ZIP1.68 sq mi |
Other place names in 57401
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57401
| ZIP | City | Distance |
|---|---|---|
57427 | Bath, SD | 10.4 mi |
57402 | Aberdeen, SD | 11.5 mi |
57479 | Warner, SD | 13.1 mi |
57481 | Westport, SD | 14.4 mi |
57433 | Columbia, SD | 14.9 mi |
57460 | Mansfield, SD | 15.5 mi |
57426 | Barnard, SD | 17.5 mi |
57474 | Stratford, SD | 18.0 mi |
57451 | Ipswich, SD | 19.8 mi |
57445 | Groton, SD | 20.3 mi |
Find every ZIP code within 10 miles of 57401 →
Questions about this ZIP code
Where is ZIP code 57401?
57401 is in Aberdeen, South Dakota, in Brown County, part of the Aberdeen, SD micropolitan area. Its published point location is 45.4823, -98.5325.
What county is 57401 in?
57401 lies in Brown County.
What area code is 57401?
Aberdeen uses area code 605, from NANPA's telephone records.
What time zone is 57401 in?
57401 uses America/Chicago.
How many people live in 57401?
About 31,939 people live in ZIP code 57401, in 13,894 households, at 114.6 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 57401?
$68,835 a year, against $75,081 across South Dakota.
What ZIP codes are near 57401?
The closest are 57427 (10.4 mi), 57402 (11.5 mi), 57479 (13.1 mi), 57481 (14.4 mi) and 57433 (14.9 mi).
Is 57401 a PO Box ZIP code?
57401 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57401 ZIP Code — Aberdeen, South Dakota (Brown County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57401
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57401.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.