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Where 57365 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 57365 into a pocket calculator and turn it upside down: SgELS — not quite a word, sorry.
- ➕ As a number, 57,365 = 5 × 7 × 11 × 149. Its digits add up to 26, a total 2,038 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000000010101 - 🏠 Its numerical neighbours: 57364 (New Holland, SD, 48 mi away) and 57366 (Parkston, SD, 79 mi away).
- 🔄 Backwards, 57365 becomes 56375 — and that is a real ZIP code: Saint Stephen, MN, 284 miles away.
- 👥 29 other ZIP codes are made of exactly the same digits (35576, 35756, 35765, 36575, 53576, 55367, …). The farthest-flung twin is 36575 in Semmes, AL, 1,087 miles away.
- 🧭 Farther north than 87% of all ZIP codes, and farther west than 79%.
- 🎯279 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57365 and you would come out at 43.81°S, 80.58°E — 623 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 28m of daylight. Shortest: 8h 54m.
- 📏 At 62.5 square miles of land, 57365 is bigger than 66% of ZIP codes — room for about 47 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 599This ZIP599 |
|---|---|
| Households | 264This ZIP264 |
| Housing units | 333This ZIP333 |
| Median age | 41.2This ZIP41.2South Dakota38.0US 38.9 |
| Median household income | $76,000This ZIP$76,000South Dakota$75,081US $80,734 |
| Median home value | $218,400This ZIP$218,400South Dakota$257,400US $332,700 |
| Median gross rent | $883This ZIP$883South Dakota$946US $1,413 |
| Bachelor's degree or higher | 23.6%This ZIP23.6% |
| Mean commute | 14.5 minThis ZIP14.5 min |
| Population density | 9.6 / sq miThis ZIP9.6 / sq mi |
Business and tax activity
| Business establishments | 24This ZIP24 |
|---|---|
| Employees | 256This ZIP256 |
| Annual payroll | $7,871,000This ZIP$7,871,000 |
| Tax returns filed | 240This ZIP240 |
| Total adjusted gross income | $15,982,000This ZIP$15,982,000 |
Land area
| Land area | 62.47 sq miThis ZIP62.47 sq mi |
|---|---|
| Water area | 9.53 sq miThis ZIP9.53 sq mi |
Other place names in 57365
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57365
| ZIP | City | Distance |
|---|---|---|
57326 | Chamberlain, SD | 4.3 mi |
57325 | Chamberlain, SD | 5.5 mi |
57569 | Reliance, SD | 7.6 mi |
57370 | Pukwana, SD | 12.4 mi |
57534 | Hamill, SD | 20.9 mi |
57544 | Kennebec, SD | 21.9 mi |
57339 | Fort Thompson, SD | 21.9 mi |
57355 | Kimball, SD | 24.3 mi |
57341 | Gann Valley, SD | 24.6 mi |
57548 | Lower Brule, SD | 26.1 mi |
Find every ZIP code within 10 miles of 57365 →
Questions about this ZIP code
Where is ZIP code 57365?
57365 is in Oacoma, South Dakota, in Lyman County. Its published point location is 43.8113, -99.4164.
What county is 57365 in?
57365 lies in Lyman County.
What area code is 57365?
Oacoma uses area code 605, from NANPA's telephone records.
What time zone is 57365 in?
57365 uses America/Chicago.
How many people live in 57365?
About 599 people live in ZIP code 57365, in 264 households, at 9.6 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 57365?
$76,000 a year, against $75,081 across South Dakota.
What ZIP codes are near 57365?
The closest are 57326 (4.3 mi), 57325 (5.5 mi), 57569 (7.6 mi), 57370 (12.4 mi) and 57534 (20.9 mi).
Is 57365 a PO Box ZIP code?
57365 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57365 ZIP Code — Oacoma, South Dakota (Lyman County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57365
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57365.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.