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Where 57313 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 57313 into a pocket calculator and turn it upside down: EIELS — not quite a word, sorry.
- ➕ As a number, 57,313 = 37 × 1549. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1101111111100001 - 🏠 Its numerical neighbours: 57312 (Alpena, SD, 61 mi away) and 57314 (Artesian, SD, 55 mi away).
- 🔄 Backwards, 57313 becomes 31375, which is not a ZIP code at all.
- 👥 28 other ZIP codes are made of exactly the same digits (13357, 13753, 15337, 15733, 17335, 17353, …). The farthest-flung twin is 33157 in Miami, FL, 1,589 miles away.
- 🧭 Farther north than 84% of all ZIP codes, and farther west than 77%.
- 🎯240 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57313 and you would come out at 43.30°S, 81.65°E — 686 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 181.4 square miles of land, 57313 is bigger than 89% of ZIP codes — room for about 138 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,220This ZIP1,220 |
|---|---|
| Households | 465This ZIP465 |
| Housing units | 574This ZIP574 |
| Median age | 39.5This ZIP39.5South Dakota38.0US 38.9 |
| Median household income | $89,107This ZIP$89,107South Dakota$75,081US $80,734 |
| Median home value | $117,300This ZIP$117,300South Dakota$257,400US $332,700 |
| Median gross rent | $794This ZIP$794South Dakota$946US $1,413 |
| Bachelor's degree or higher | 29.7%This ZIP29.7% |
| Mean commute | 23.3 minThis ZIP23.3 min |
| Population density | 6.7 / sq miThis ZIP6.7 / sq mi |
Business and tax activity
| Business establishments | 41This ZIP41 |
|---|---|
| Employees | 252This ZIP252 |
| Annual payroll | $11,606,000This ZIP$11,606,000 |
| Tax returns filed | 560This ZIP560 |
| Total adjusted gross income | $40,393,000This ZIP$40,393,000 |
Land area
| Land area | 181.38 sq miThis ZIP181.38 sq mi |
|---|---|
| Water area | 0.52 sq miThis ZIP0.52 sq mi |
Counties 57313 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Douglas County | 65.8% |
| Charles Mix County | 34.3% |
Other place names in 57313
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57313
| ZIP | City | Distance |
|---|---|---|
57328 | Corsica, SD | 10.1 mi |
57330 | Delmont, SD | 10.3 mi |
57356 | Lake Andes, SD | 13.6 mi |
57364 | New Holland, SD | 16.0 mi |
57344 | Harrison, SD | 16.6 mi |
57342 | Geddes, SD | 17.9 mi |
57367 | Pickstown, SD | 18.1 mi |
57375 | Stickney, SD | 18.5 mi |
57380 | Wagner, SD | 19.2 mi |
57331 | Dimock, SD | 19.5 mi |
Find every ZIP code within 10 miles of 57313 →
Questions about this ZIP code
Where is ZIP code 57313?
57313 is in Armour, South Dakota, in Douglas County. Its published point location is 43.3048, -98.3548.
What county is 57313 in?
57313 spans 2 counties: Douglas County and Charles Mix County. Most of it falls in Douglas 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 57313?
Armour uses area code 605, from NANPA's telephone records.
What time zone is 57313 in?
57313 uses America/Chicago.
How many people live in 57313?
About 1,220 people live in ZIP code 57313, in 465 households, at 6.7 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 57313?
$89,107 a year, against $75,081 across South Dakota.
What ZIP codes are near 57313?
The closest are 57328 (10.1 mi), 57330 (10.3 mi), 57356 (13.6 mi), 57364 (16 mi) and 57344 (16.6 mi).
Is 57313 a PO Box ZIP code?
57313 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57313 ZIP Code — Armour, South Dakota (Douglas County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57313
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57313.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.