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Where 57623 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 57623 into a pocket calculator and turn it upside down: EZgLS — not quite a word, sorry.
- ➕ As a number, 57,623 = 29 × 1987. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000100010111 - 🏠 Its numerical neighbours: 57622 (Cherry Creek, SD, 23 mi away) and 57625 (Eagle Butte, SD, 31 mi away).
- 🔄 Backwards, 57623 becomes 32675, which is not a ZIP code at all.
- 👥 58 other ZIP codes are made of exactly the same digits (25637, 26537, 26753, 27356, 27536, 27563, …). The farthest-flung twin is 32765 in Oviedo, FL, 1,590 miles away.
- 🧭 Farther north than 91% of all ZIP codes, and farther west than 81%.
- 🎯391 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57623 and you would come out at 45.02°S, 78.35°E — 485 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 37m of daylight. Shortest: 8h 46m.
- 📏 At 639.7 square miles of land, 57623 is bigger than 98% of ZIP codes — room for about 486 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 902This ZIP902 |
|---|---|
| Households | 285This ZIP285 |
| Housing units | 347This ZIP347 |
| Median age | 39.6This ZIP39.6South Dakota38.0US 38.9 |
| Median household income | $59,946This ZIP$59,946South Dakota$75,081US $80,734 |
| Median home value | $86,600This ZIP$86,600South Dakota$257,400US $332,700 |
| Median gross rent | $694This ZIP$694South Dakota$946US $1,413 |
| Bachelor's degree or higher | 19.8%This ZIP19.8% |
| Mean commute | 19.9 minThis ZIP19.9 min |
| Population density | 1.4 / sq miThis ZIP1.4 / sq mi |
Business and tax activity
| Business establishments | 14This ZIP14 |
|---|---|
| Employees | 77This ZIP77 |
| Annual payroll | $4,753,000This ZIP$4,753,000 |
| Tax returns filed | 390This ZIP390 |
| Total adjusted gross income | $20,487,000This ZIP$20,487,000 |
Land area
| Land area | 639.65 sq miThis ZIP639.65 sq mi |
|---|---|
| Water area | 1.92 sq miThis ZIP1.92 sq mi |
Other place names in 57623
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57623
| ZIP | City | Distance |
|---|---|---|
57636 | Lantry, SD | 10.6 mi |
57622 | Cherry Creek, SD | 23.4 mi |
57626 | Faith, SD | 25.5 mi |
57633 | Isabel, SD | 30.0 mi |
57625 | Eagle Butte, SD | 30.8 mi |
57748 | Howes, SD | 34.5 mi |
57661 | Whitehorse, SD | 37.2 mi |
57553 | Milesville, SD | 37.4 mi |
57644 | Meadow, SD | 38.4 mi |
57656 | Timber Lake, SD | 38.7 mi |
Find every ZIP code within 10 miles of 57623 →
Questions about this ZIP code
Where is ZIP code 57623?
57623 is in Dupree, South Dakota, in Ziebach County. Its published point location is 45.0159, -101.6530.
What county is 57623 in?
57623 lies in Ziebach County.
What area code is 57623?
Dupree uses area code 605, from NANPA's telephone records.
What time zone is 57623 in?
57623 uses America/Denver.
How many people live in 57623?
About 902 people live in ZIP code 57623, in 285 households, at 1.4 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 57623?
$59,946 a year, against $75,081 across South Dakota.
What ZIP codes are near 57623?
The closest are 57636 (10.6 mi), 57622 (23.4 mi), 57626 (25.5 mi), 57633 (30 mi) and 57625 (30.8 mi).
Is 57623 a PO Box ZIP code?
57623 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57623 ZIP Code — Dupree, South Dakota (Ziebach County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57623
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57623.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.