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Where 57256 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 57256 into a pocket calculator and turn it upside down: gSZLS — not quite a word, sorry.
- ➕ As a number, 57,256 = 2 × 2 × 2 × 17 × 421. Its digits add up to 25, a total 2,242 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1101111110101000 - 🏠 Its numerical neighbours: 57255 (New Effington, SD, 43 mi away) and 57257 (Peever, SD, 19 mi away).
- 🔄 Backwards, 57256 becomes 65275 — and that is a real ZIP code: Paris, MO, 480 miles away.
- 👥 34 other ZIP codes are made of exactly the same digits (25567, 26575, 26755, 27556, 27565, 52567, …). The farthest-flung twin is 27556 in Middleburg, NC, 1,157 miles away.
- 🧭 Farther north than 92% of all ZIP codes, and farther west than 75%.
- 🎯381 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57256 and you would come out at 45.25°S, 82.80°E — 653 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 39m of daylight. Shortest: 8h 44m.
- 📏 At 44.4 square miles of land, 57256 is bigger than 56% of ZIP codes — room for about 34 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 238This ZIP238 |
|---|---|
| Households | 88This ZIP88 |
| Housing units | 100This ZIP100 |
| Median age | 46.3This ZIP46.3South Dakota38.0US 38.9 |
| Median household income | $66,500This ZIP$66,500South Dakota$75,081US $80,734 |
| Median home value | $225,000This ZIP$225,000South Dakota$257,400US $332,700 |
| Bachelor's degree or higher | 13.8%This ZIP13.8% |
| Mean commute | 23.0 minThis ZIP23.0 min |
| Population density | 5.4 / sq miThis ZIP5.4 / sq mi |
Land area
| Land area | 44.37 sq miThis ZIP44.37 sq mi |
|---|---|
| Water area | 0.44 sq miThis ZIP0.44 sq mi |
Counties 57256 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Grant County | 62.3% |
| Roberts County | 20.0% |
| Day County | 13.0% |
| Codington County | 4.7% |
Other place names in 57256
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57256
| ZIP | City | Distance |
|---|---|---|
57266 | Summit, SD | 5.8 mi |
57273 | Waubay, SD | 6.9 mi |
57263 | South Shore, SD | 11.9 mi |
57251 | Marvin, SD | 12.9 mi |
57235 | Florence, SD | 13.7 mi |
57272 | Wallace, SD | 17.1 mi |
57274 | Webster, SD | 17.9 mi |
57257 | Peever, SD | 18.9 mi |
57239 | Grenville, SD | 18.9 mi |
57269 | Twin Brooks, SD | 19.4 mi |
Find every ZIP code within 10 miles of 57256 →
Questions about this ZIP code
Where is ZIP code 57256?
57256 is in Ortley, South Dakota, in Grant County. Its published point location is 45.2500, -97.1970.
What county is 57256 in?
57256 spans 4 counties: Grant County, Roberts County, Day County and Codington County. Most of it falls in Grant 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 57256?
Ortley uses area code 605, from NANPA's telephone records.
What time zone is 57256 in?
57256 uses America/Chicago.
How many people live in 57256?
About 238 people live in ZIP code 57256, in 88 households, at 5.4 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 57256?
$66,500 a year, against $75,081 across South Dakota.
What ZIP codes are near 57256?
The closest are 57266 (5.8 mi), 57273 (6.9 mi), 57263 (11.9 mi), 57251 (12.9 mi) and 57235 (13.7 mi).
Is 57256 a PO Box ZIP code?
57256 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57256 ZIP Code — Ortley, South Dakota (Grant County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57256
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57256.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.