ZIP Code 57580 — Winner, SD
57580 is a standard (street delivery) ZIP code serving Winner, South Dakota, in Tripp County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 57580 at a glance
| ZIP code | 57580 |
|---|---|
| Primary city | Winner |
| State | South Dakota (SD) |
| County | Tripp FIPS 46123 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,386 |
| Coordinates | 43.289870, -100.057720 |
How ZIP+4 works in 57580
The four digits after the hyphen encode a delivery segment inside 57580. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 57580 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 57580.
| ZIP | City | Distance |
|---|---|---|
| 57584 | Witten, SD | 13.9 mi |
| 57528 | Colome, SD | 16.9 mi |
| 57563 | Okreek, SD | 17.9 mi |
| 57541 | Ideal, SD | 22.7 mi |
| 57529 | Dallas, SD | 24.8 mi |
| 57585 | Wood, SD | 25 mi |
| 69220 | Sparks, NE | 26 mi |
| 57534 | Hamill, SD | 27.8 mi |
| 68778 | Springview, NE | 31.9 mi |
Questions about 57580
What is the ZIP+4 code for 57580?
57580 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 57580, you need to look up a specific street address to get them.
What city is 57580?
57580 is assigned to Winner, South Dakota, in Tripp County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.