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Where 57533 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 57533 into a pocket calculator and turn it upside down: EESLS — not quite a word, sorry.
- ➕ As a number, 57,533 = 7 × 8219. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110000010111101 - 🏠 Its numerical neighbours: 57532 (Fort Pierre, SD, 90 mi away) and 57534 (Hamill, SD, 19 mi away).
- 🔄 Backwards, 57533 becomes 33575 — and that is a real ZIP code: Ruskin, FL, 1,436 miles away.
- 👥 12 other ZIP codes are made of exactly the same digits (33575, 33755, 35573, 37355, 53537, 53573, …). The farthest-flung twin is 33575 in Ruskin, FL, 1,436 miles away.
- 🧭 Farther north than 85% of all ZIP codes, and farther west than 79%.
- 🎯247 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57533 and you would come out at 43.35°S, 80.58°E — 644 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 376.8 square miles of land, 57533 is bigger than 96% of ZIP codes — room for about 286 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,674This ZIP1,674 |
|---|---|
| Households | 670This ZIP670 |
| Housing units | 869This ZIP869 |
| Median age | 40.6This ZIP40.6South Dakota38.0US 38.9 |
| Median household income | $58,500This ZIP$58,500South Dakota$75,081US $80,734 |
| Median home value | $122,400This ZIP$122,400South Dakota$257,400US $332,700 |
| Median gross rent | $633This ZIP$633South Dakota$946US $1,413 |
| Bachelor's degree or higher | 20.4%This ZIP20.4% |
| Mean commute | 13.5 minThis ZIP13.5 min |
| Population density | 4.4 / sq miThis ZIP4.4 / sq mi |
Business and tax activity
| Business establishments | 96This ZIP96 |
|---|---|
| Employees | 638This ZIP638 |
| Annual payroll | $25,782,000This ZIP$25,782,000 |
| Tax returns filed | 880This ZIP880 |
| Total adjusted gross income | $60,003,000This ZIP$60,003,000 |
Land area
| Land area | 376.79 sq miThis ZIP376.79 sq mi |
|---|---|
| Water area | 8.70 sq miThis ZIP8.70 sq mi |
Counties 57533 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Gregory County | 72.4% |
| Lyman County | 26.5% |
| Tripp County | 1.1% |
Other place names in 57533
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57533
| ZIP | City | Distance |
|---|---|---|
57529 | Dallas, SD | 11.0 mi |
57523 | Burke, SD | 11.6 mi |
57534 | Hamill, SD | 18.6 mi |
57538 | Herrick, SD | 20.7 mi |
57528 | Colome, SD | 20.9 mi |
57369 | Platte, SD | 24.0 mi |
57317 | Bonesteel, SD | 26.9 mi |
57571 | Saint Charles, SD | 27.1 mi |
57541 | Ideal, SD | 30.0 mi |
57365 | Oacoma, SD | 31.8 mi |
Find every ZIP code within 10 miles of 57533 →
Questions about this ZIP code
Where is ZIP code 57533?
57533 is in Gregory, South Dakota, in Gregory County. Its published point location is 43.3504, -99.4203.
What county is 57533 in?
57533 spans 3 counties: Gregory County, Lyman County and Tripp County. Most of it falls in Gregory 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 57533?
Gregory uses area code 605, from NANPA's telephone records.
What time zone is 57533 in?
57533 uses America/Chicago.
How many people live in 57533?
About 1,674 people live in ZIP code 57533, in 670 households, at 4.4 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 57533?
$58,500 a year, against $75,081 across South Dakota.
What ZIP codes are near 57533?
The closest are 57529 (11 mi), 57523 (11.6 mi), 57534 (18.6 mi), 57538 (20.7 mi) and 57528 (20.9 mi).
Is 57533 a PO Box ZIP code?
57533 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57533 ZIP Code — Gregory, South Dakota (Gregory County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57533
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57533.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.