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Where 57437 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 57437 into a pocket calculator and turn it upside down: LEhLS — not quite a word, sorry.
- ➕ As a number, 57,437 = 19 × 3023. Its digits add up to 26, a total 2,038 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000001011101 - 🏠 Its numerical neighbours: 57436 (Doland, SD, 100 mi away) and 57438 (Faulkton, SD, 55 mi away).
- 🔄 Backwards, 57437 becomes 73475, which is not a ZIP code at all.
- 👥 30 other ZIP codes are made of exactly the same digits (35477, 35747, 35774, 37745, 37754, 43757, …). The farthest-flung twin is 77534 in Danbury, TX, 1,169 miles away.
- 🧭 Farther north than 93% of all ZIP codes, and farther west than 79%.
- 🎯415 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57437 and you would come out at 45.79°S, 80.38°E — 533 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 43m of daylight. Shortest: 8h 40m.
- 📏 At 532.9 square miles of land, 57437 is bigger than 98% of ZIP codes — room for about 405 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,074This ZIP1,074 |
|---|---|
| Households | 556This ZIP556 |
| Housing units | 717This ZIP717 |
| Median age | 63.3This ZIP63.3South Dakota38.0US 38.9 |
| Median household income | $49,276This ZIP$49,276South Dakota$75,081US $80,734 |
| Median home value | $86,700This ZIP$86,700South Dakota$257,400US $332,700 |
| Median gross rent | $566This ZIP$566South Dakota$946US $1,413 |
| Bachelor's degree or higher | 20.8%This ZIP20.8% |
| Mean commute | 18.8 minThis ZIP18.8 min |
| Population density | 2.0 / sq miThis ZIP2.0 / sq mi |
Business and tax activity
| Business establishments | 53This ZIP53 |
|---|---|
| Employees | 282This ZIP282 |
| Annual payroll | $10,871,000This ZIP$10,871,000 |
| Tax returns filed | 560This ZIP560 |
| Total adjusted gross income | $44,247,000This ZIP$44,247,000 |
Land area
| Land area | 532.86 sq miThis ZIP532.86 sq mi |
|---|---|
| Water area | 5.66 sq miThis ZIP5.66 sq mi |
Counties 57437 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| McPherson County | 69.1% |
| Campbell County | 30.9% |
Other place names in 57437
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57437
| ZIP | City | Distance |
|---|---|---|
57448 | Hosmer, SD | 15.3 mi |
58413 | Ashley, ND | 19.6 mi |
58581 | Zeeland, ND | 20.0 mi |
57632 | Herreid, SD | 20.4 mi |
57452 | Java, SD | 21.3 mi |
57646 | Mound City, SD | 22.2 mi |
57428 | Bowdle, SD | 23.4 mi |
57457 | Long Lake, SD | 23.5 mi |
58542 | Hague, ND | 25.0 mi |
57471 | Roscoe, SD | 30.4 mi |
Find every ZIP code within 10 miles of 57437 →
Questions about this ZIP code
Where is ZIP code 57437?
57437 is in Eureka, South Dakota, in McPherson County. Its published point location is 45.7891, -99.6250.
What county is 57437 in?
57437 spans 2 counties: McPherson County and Campbell County. Most of it falls in McPherson 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 57437?
Eureka uses area code 605, from NANPA's telephone records.
What time zone is 57437 in?
57437 uses America/Chicago.
How many people live in 57437?
About 1,074 people live in ZIP code 57437, in 556 households, at 2.0 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 57437?
$49,276 a year, against $75,081 across South Dakota.
What ZIP codes are near 57437?
The closest are 57448 (15.3 mi), 58413 (19.6 mi), 58581 (20 mi), 57632 (20.4 mi) and 57452 (21.3 mi).
Is 57437 a PO Box ZIP code?
57437 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57437 ZIP Code — Eureka, South Dakota (McPherson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57437
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57437.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.