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Where 57750 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 57750 into a pocket calculator and turn it upside down: OSLLS — not quite a word, sorry.
- ➕ As a number, 57,750 = 2 × 3 × 5 × 5 × 5 × 7 × 11. Its digits add up to 24, a total 2,425 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000110010110 - 🏠 Its numerical neighbours: 57748 (Howes, SD, 69 mi away) and 57751 (Keystone, SD, 76 mi away).
- 🔄 Backwards, 57750 becomes 05775 — and that is a real ZIP code: West Pawlet, VT, 1,433 miles away.
- 👥 20 other ZIP codes are made of exactly the same digits (05757, 05775, 07755, 50577, 55077, 55707, …). The farthest-flung twin is 07755 in Oakhurst, NJ, 1,447 miles away.
- 🧭 Farther north than 86% of all ZIP codes, and farther west than 81%.
- 🎯313 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57750 and you would come out at 43.59°S, 78.05°E — 545 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 26m of daylight. Shortest: 8h 56m.
- 📏 At 325.2 square miles of land, 57750 is bigger than 95% of ZIP codes — room for about 247 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 365This ZIP365 |
|---|---|
| Households | 115This ZIP115 |
| Housing units | 166This ZIP166 |
| Median age | 23.6This ZIP23.6South Dakota38.0US 38.9 |
| Median home value | $175,000This ZIP$175,000South Dakota$257,400US $332,700 |
| Median gross rent | $907This ZIP$907South Dakota$946US $1,413 |
| Bachelor's degree or higher | 19.7%This ZIP19.7% |
| Population density | 1.1 / sq miThis ZIP1.1 / sq mi |
Business and tax activity
| Business establishments | 6This ZIP6 |
|---|---|
| Employees | 15This ZIP15 |
| Annual payroll | $933,000This ZIP$933,000 |
| Tax returns filed | 140This ZIP140 |
| Total adjusted gross income | $6,949,000This ZIP$6,949,000 |
Land area
| Land area | 325.24 sq miThis ZIP325.24 sq mi |
|---|---|
| Water area | 0.83 sq miThis ZIP0.83 sq mi |
Counties 57750 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Jackson County | 98.0% |
| Pennington County | 1.9% |
Other place names in 57750
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57750
| ZIP | City | Distance |
|---|---|---|
57577 | Wanblee, SD | 15.3 mi |
57752 | Kyle, SD | 17.1 mi |
57714 | Allen, SD | 18.3 mi |
57543 | Kadoka, SD | 23.7 mi |
57547 | Long Valley, SD | 27.1 mi |
57780 | Scenic, SD | 29.3 mi |
57551 | Martin, SD | 30.1 mi |
57772 | Porcupine, SD | 30.2 mi |
57775 | Quinn, SD | 34.7 mi |
57756 | Manderson, SD | 36.2 mi |
Find every ZIP code within 10 miles of 57750 →
Questions about this ZIP code
Where is ZIP code 57750?
57750 is in Interior, South Dakota, in Jackson County. Its published point location is 43.5929, -101.9451.
What county is 57750 in?
57750 spans 2 counties: Jackson County and Pennington County. Most of it falls in Jackson 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 57750?
Interior uses area code 605, from NANPA's telephone records.
What time zone is 57750 in?
57750 uses America/Denver.
How many people live in 57750?
About 365 people live in ZIP code 57750, in 115 households, at 1.1 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 57750?
The closest are 57577 (15.3 mi), 57752 (17.1 mi), 57714 (18.3 mi), 57543 (23.7 mi) and 57547 (27.1 mi).
Is 57750 a PO Box ZIP code?
57750 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57750 ZIP Code — Interior, South Dakota (Jackson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57750
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57750.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.