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Where 57221 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 57221 into a pocket calculator and turn it upside down: IZZLS — not quite a word, sorry.
- ➕ 57221 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1101111110000101 - 🏠 Its numerical neighbours: 57220 (Bruce, SD, 28 mi away) and 57223 (Castlewood, SD, 23 mi away).
- 🔄 Backwards, 57221 becomes 12275, which is not a ZIP code at all.
- 👥 33 other ZIP codes are made of exactly the same digits (12257, 12527, 12572, 12725, 12752, 15227, …). The farthest-flung twin is 12527 in Glenham, NY, 1,201 miles away.
- 🧭 Farther north than 90% of all ZIP codes, and farther west than 75%.
- 🎯335 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 57221 and you would come out at 44.61°S, 82.56°E — 666 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 34m of daylight. Shortest: 8h 49m.
- 📏 At 118.2 square miles of land, 57221 is bigger than 82% of ZIP codes — room for about 90 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,158This ZIP1,158 |
|---|---|
| Households | 341This ZIP341 |
| Housing units | 368This ZIP368 |
| Median age | 26.8This ZIP26.8South Dakota38.0US 38.9 |
| Median household income | $73,988This ZIP$73,988South Dakota$75,081US $80,734 |
| Median home value | $227,100This ZIP$227,100South Dakota$257,400US $332,700 |
| Median gross rent | $925This ZIP$925South Dakota$946US $1,413 |
| Bachelor's degree or higher | 17.2%This ZIP17.2% |
| Mean commute | 19.9 minThis ZIP19.9 min |
| Population density | 9.8 / sq miThis ZIP9.8 / sq mi |
Business and tax activity
| Business establishments | 35This ZIP35 |
|---|---|
| Employees | 243This ZIP243 |
| Annual payroll | $16,371,000This ZIP$16,371,000 |
| Tax returns filed | 370This ZIP370 |
| Total adjusted gross income | $33,303,000This ZIP$33,303,000 |
Land area
| Land area | 118.20 sq miThis ZIP118.20 sq mi |
|---|---|
| Water area | 1.01 sq miThis ZIP1.01 sq mi |
Counties 57221 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Hamlin County | 73.3% |
| Clark County | 26.7% |
Other place names in 57221
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 57221
| ZIP | City | Distance |
|---|---|---|
57233 | Erwin, SD | 7.1 mi |
57271 | Vienna, SD | 11.4 mi |
57278 | Willow Lake, SD | 12.1 mi |
57242 | Hazel, SD | 12.1 mi |
57241 | Hayti, SD | 12.6 mi |
57248 | Lake Norden, SD | 12.6 mi |
57214 | Badger, SD | 15.0 mi |
57249 | Lake Preston, SD | 16.0 mi |
57231 | De Smet, SD | 17.5 mi |
57243 | Henry, SD | 21.0 mi |
Find every ZIP code within 10 miles of 57221 →
Questions about this ZIP code
Where is ZIP code 57221?
57221 is in Bryant, South Dakota, in Hamlin County. Its published point location is 44.6089, -97.4414.
What county is 57221 in?
57221 spans 2 counties: Hamlin County and Clark County. Most of it falls in Hamlin 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 57221?
Bryant uses area code 605, from NANPA's telephone records.
What time zone is 57221 in?
57221 uses America/Chicago.
How many people live in 57221?
About 1,158 people live in ZIP code 57221, in 341 households, at 9.8 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 57221?
$73,988 a year, against $75,081 across South Dakota.
What ZIP codes are near 57221?
The closest are 57233 (7.1 mi), 57271 (11.4 mi), 57278 (12.1 mi), 57242 (12.1 mi) and 57241 (12.6 mi).
Is 57221 a PO Box ZIP code?
57221 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “57221 ZIP Code — Bryant, South Dakota (Hamlin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57221
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/57221.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.