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Where 57330 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 57330 into a pocket calculator and turn it upside down: OEELS — not quite a word, sorry.
- ➕ As a number, 57,330 = 2 × 3 × 3 × 5 × 7 × 7 × 13. Its digits add up to 18, a total 2,332 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1101111111110010 - 🏠 Its numerical neighbours: 57329 (Dante, SD, 20 mi away) and 57331 (Dimock, SD, 16 mi away).
- 🔄 Backwards, 57330 becomes 03375, which is not a ZIP code at all.
- 👥 27 other ZIP codes are made of exactly the same digits (03753, 05733, 07533, 30357, 30375, 30537, …). The farthest-flung twin is 33075 in Coral Springs, FL, 1,545 miles away.
- 🧭 Farther north than 84% of all ZIP codes, and farther west than 77%.
- 🎯238 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57330 and you would come out at 43.26°S, 81.84°E — 695 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
- 📏 At 116.0 square miles of land, 57330 is bigger than 81% of ZIP codes — room for about 88 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 594This ZIP594 |
|---|---|
| Households | 171This ZIP171 |
| Housing units | 203This ZIP203 |
| Median age | 40.1This ZIP40.1South Dakota38.0US 38.9 |
| Median household income | $71,563This ZIP$71,563South Dakota$75,081US $80,734 |
| Median home value | $143,800This ZIP$143,800South Dakota$257,400US $332,700 |
| Median gross rent | $618This ZIP$618South Dakota$946US $1,413 |
| Bachelor's degree or higher | 40.8%This ZIP40.8% |
| Mean commute | 19.8 minThis ZIP19.8 min |
| Population density | 5.1 / sq miThis ZIP5.1 / sq mi |
Business and tax activity
| Business establishments | 6This ZIP6 |
|---|---|
| Employees | 19This ZIP19 |
| Annual payroll | $666,000This ZIP$666,000 |
| Tax returns filed | 140This ZIP140 |
| Total adjusted gross income | $9,274,000This ZIP$9,274,000 |
Land area
| Land area | 116.02 sq miThis ZIP116.02 sq mi |
|---|---|
| Water area | 0.07 sq miThis ZIP0.07 sq mi |
Counties 57330 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Douglas County | 60.7% |
| Charles Mix County | 25.9% |
| Hutchinson County | 13.4% |
Other place names in 57330
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57330
| ZIP | City | Distance |
|---|---|---|
57313 | Armour, SD | 10.3 mi |
57376 | Tripp, SD | 11.1 mi |
57366 | Parkston, SD | 13.8 mi |
57331 | Dimock, SD | 15.6 mi |
57354 | Kaylor, SD | 16.5 mi |
57380 | Wagner, SD | 17.7 mi |
57328 | Corsica, SD | 18.5 mi |
57329 | Dante, SD | 19.6 mi |
57356 | Lake Andes, SD | 19.7 mi |
57315 | Avon, SD | 20.0 mi |
Find every ZIP code within 10 miles of 57330 →
Questions about this ZIP code
Where is ZIP code 57330?
57330 is in Delmont, South Dakota, in Douglas County. Its published point location is 43.2645, -98.1577.
What county is 57330 in?
57330 spans 3 counties: Douglas County, Charles Mix County and Hutchinson County. Most of it falls in Douglas 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 57330?
Delmont uses area code 605, from NANPA's telephone records.
What time zone is 57330 in?
57330 uses America/Chicago.
How many people live in 57330?
About 594 people live in ZIP code 57330, in 171 households, at 5.1 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 57330?
$71,563 a year, against $75,081 across South Dakota.
What ZIP codes are near 57330?
The closest are 57313 (10.3 mi), 57376 (11.1 mi), 57366 (13.8 mi), 57331 (15.6 mi) and 57354 (16.5 mi).
Is 57330 a PO Box ZIP code?
57330 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57330 ZIP Code — Delmont, South Dakota (Douglas County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57330
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57330.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.