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Where 57601 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 57601 into a pocket calculator and turn it upside down: IOgLS — not quite a word, sorry.
- ➕ 57601 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:
1110000100000001 - 🏠 Its numerical neighbours: 57585 (Wood, SD, 123 mi away) and 57620 (Bison, SD, 106 mi away).
- 🔄 Backwards, 57601 becomes 10675, which is not a ZIP code at all.
- 👥 61 other ZIP codes are made of exactly the same digits (01756, 05671, 05761, 06517, 06751, 10567, …). The farthest-flung twin is 01756 in Mendon, MA, 1,449 miles away.
- 🧭 Farther north than 92% of all ZIP codes, and farther west than 80%.
- 🎯391 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57601 and you would come out at 45.34°S, 79.64°E — 520 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 40m of daylight. Shortest: 8h 43m.
- 📏 At 422.4 square miles of land, 57601 is bigger than 97% of ZIP codes — room for about 321 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,422This ZIP3,422 |
|---|---|
| Households | 1,650This ZIP1,650 |
| Housing units | 1,898This ZIP1,898 |
| Median age | 41.4This ZIP41.4South Dakota38.0US 38.9 |
| Median household income | $66,003This ZIP$66,003South Dakota$75,081US $80,734 |
| Median home value | $154,600This ZIP$154,600South Dakota$257,400US $332,700 |
| Median gross rent | $943This ZIP$943South Dakota$946US $1,413 |
| Bachelor's degree or higher | 32.8%This ZIP32.8% |
| Mean commute | 14.1 minThis ZIP14.1 min |
| Population density | 8.1 / sq miThis ZIP8.1 / sq mi |
Business and tax activity
| Business establishments | 165This ZIP165 |
|---|---|
| Employees | 1,470This ZIP1,470 |
| Annual payroll | $61,333,000This ZIP$61,333,000 |
| Tax returns filed | 1,750This ZIP1,750 |
| Total adjusted gross income | $132,179,000This ZIP$132,179,000 |
Land area
| Land area | 422.39 sq miThis ZIP422.39 sq mi |
|---|---|
| Water area | 54.10 sq miThis ZIP54.10 sq mi |
Counties 57601 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Dewey County | 85.3% |
| Corson County | 8.9% |
| Walworth County | 5.7% |
Other place names in 57601
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57601
| ZIP | City | Distance |
|---|---|---|
57420 | Akaska, SD | 11.5 mi |
57472 | Selby, SD | 13.8 mi |
57631 | Glenham, SD | 17.6 mi |
57652 | Ridgeview, SD | 20.9 mi |
57442 | Gettysburg, SD | 21.6 mi |
57630 | Glencross, SD | 23.3 mi |
57657 | Trail City, SD | 24.2 mi |
57658 | Wakpala, SD | 24.8 mi |
57450 | Hoven, SD | 27.6 mi |
57452 | Java, SD | 27.7 mi |
Find every ZIP code within 10 miles of 57601 →
Questions about this ZIP code
Where is ZIP code 57601?
57601 is in Mobridge, South Dakota, in Dewey County. Its published point location is 45.3390, -100.3647.
What county is 57601 in?
57601 spans 3 counties: Dewey County, Corson County and Walworth County. Most of it falls in Dewey 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 57601?
Mobridge uses area code 605, from NANPA's telephone records.
What time zone is 57601 in?
57601 uses America/Denver.
How many people live in 57601?
About 3,422 people live in ZIP code 57601, in 1,650 households, at 8.1 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 57601?
$66,003 a year, against $75,081 across South Dakota.
What ZIP codes are near 57601?
The closest are 57420 (11.5 mi), 57472 (13.8 mi), 57631 (17.6 mi), 57652 (20.9 mi) and 57442 (21.6 mi).
Is 57601 a PO Box ZIP code?
57601 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57601 ZIP Code — Mobridge, South Dakota (Dewey County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57601
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57601.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.