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Where 57650 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 57650 into a pocket calculator and turn it upside down: OSgLS — not quite a word, sorry.
- ➕ As a number, 57,650 = 2 × 5 × 5 × 1153. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000100110010 - 🏠 Its numerical neighbours: 57649 (Prairie City, SD, 25 mi away) and 57651 (Reva, SD, 24 mi away).
- 🔄 Backwards, 57650 becomes 05675 — and that is a real ZIP code: Washington, VT, 1,493 miles away.
- 👥 35 other ZIP codes are made of exactly the same digits (05657, 05675, 05765, 06755, 50567, 50576, …). The farthest-flung twin is 06755 in Gaylordsville, CT, 1,494 miles away.
- 🧭 Farther north than 93% of all ZIP codes, and farther west than 81%.
- 🎯472 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57650 and you would come out at 45.83°S, 76.97°E — 397 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 44m of daylight. Shortest: 8h 40m.
- 📏 At 75.6 square miles of land, 57650 is bigger than 71% of ZIP codes — room for about 57 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 17This ZIP17 |
|---|---|
| Households | 4This ZIP4 |
| Housing units | 4This ZIP4 |
| Median age | 51.2This ZIP51.2South Dakota38.0US 38.9 |
| Bachelor's degree or higher | 33.3%This ZIP33.3% |
| Population density | 0.2 / sq miThis ZIP0.2 / sq mi |
Land area
| Land area | 75.62 sq miThis ZIP75.62 sq mi |
|---|---|
| Water area | 0.13 sq miThis ZIP0.13 sq mi |
ZIP codes near 57650
| ZIP | City | Distance |
|---|---|---|
57755 | Ludlow, SD | 15.3 mi |
57640 | Lodgepole, SD | 16.5 mi |
58653 | Scranton, ND | 18.5 mi |
58649 | Reeder, ND | 22.3 mi |
57651 | Reva, SD | 24.5 mi |
58639 | Hettinger, ND | 24.6 mi |
57649 | Prairie City, SD | 25.3 mi |
58623 | Bowman, ND | 29.5 mi |
57720 | Buffalo, SD | 33.5 mi |
57638 | Lemmon, SD | 38.7 mi |
Find every ZIP code within 10 miles of 57650 →
Questions about this ZIP code
Where is ZIP code 57650?
57650 is in Ralph, South Dakota, in Harding County. Its published point location is 45.8309, -103.0347.
What county is 57650 in?
57650 lies in Harding County.
What time zone is 57650 in?
57650 uses America/Denver.
How many people live in 57650?
About 17 people live in ZIP code 57650, in 4 households, at 0.2 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 57650?
The closest are 57755 (15.3 mi), 57640 (16.5 mi), 58653 (18.5 mi), 58649 (22.3 mi) and 57651 (24.5 mi).
Is 57650 a PO Box ZIP code?
57650 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57650 ZIP Code — Ralph, South Dakota (Harding County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57650
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57650.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.