57571
ZIP 57571 is Saint Charles, South Dakota, in Gregory County; area code 605; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Gregory
- Metro area
- none
- Population
- 22
- Coordinates
- 43.0413, -99.0901
Weather right now
Asking the National Weather Service…
Where 57571 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 57571 into a pocket calculator and turn it upside down: ILSLS — not quite a word, sorry.
- ➕ 57571 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 25, a total 2,242 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000011100011 - 🏠 Its numerical neighbours: 57570 (Rosebud, SD, 92 mi away) and 57572 (Saint Francis, SD, 102 mi away).
- 🔄 Backwards, 57571 becomes 17575 — and that is a real ZIP code: Silver Spring, PA, 1,186 miles away.
- 👥 13 other ZIP codes are made of exactly the same digits (15757, 15775, 17557, 17575, 51577, 55717, …). The farthest-flung twin is 17557 in New Holland, PA, 1,203 miles away.
- 🧭 Farther north than 83% of all ZIP codes, and farther west than 79%.
- 🎯224 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57571 and you would come out at 43.04°S, 80.91°E — 671 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 22m of daylight. Shortest: 9h 00m.
- 📏 At 10.5 square miles of land, 57571 is bigger than 28% of ZIP codes — room for about 8.0 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 22This ZIP22 |
|---|---|
| Households | 12This ZIP12 |
| Housing units | 29This ZIP29 |
| Median age | 56.5This ZIP56.5South Dakota38.0US 38.9 |
| Bachelor's degree or higher | 15.4%This ZIP15.4% |
| Population density | 2.1 / sq miThis ZIP2.1 / sq mi |
Land area
| Land area | 10.51 sq miThis ZIP10.51 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 57571
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57571
| ZIP | City | Distance |
|---|---|---|
57538 | Herrick, SD | 6.5 mi |
68755 | Naper, NE | 8.2 mi |
57317 | Bonesteel, SD | 9.4 mi |
68722 | Butte, NE | 13.6 mi |
57523 | Burke, SD | 16.1 mi |
57335 | Fairfax, SD | 17.6 mi |
68753 | Mills, NE | 23.8 mi |
68759 | Newport, NE | 23.8 mi |
68777 | Spencer, NE | 23.9 mi |
57342 | Geddes, SD | 24.1 mi |
Find every ZIP code within 10 miles of 57571 →
Questions about this ZIP code
Where is ZIP code 57571?
57571 is in Saint Charles, South Dakota, in Gregory County. Its published point location is 43.0413, -99.0901.
What county is 57571 in?
57571 lies in Gregory County.
What area code is 57571?
Saint Charles uses area code 605, from NANPA's telephone records.
What time zone is 57571 in?
57571 uses America/Chicago.
How many people live in 57571?
About 22 people live in ZIP code 57571, in 12 households, at 2.1 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 57571?
The closest are 57538 (6.5 mi), 68755 (8.2 mi), 57317 (9.4 mi), 68722 (13.6 mi) and 57523 (16.1 mi).
Is 57571 a PO Box ZIP code?
57571 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57571 ZIP Code — Saint Charles, South Dakota (Gregory County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57571
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57571.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.