ZIP Code 57279 — Wilmot, SD
57279 is a standard (street delivery) ZIP code serving Wilmot, South Dakota, in Roberts 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 57279 at a glance
| ZIP code | 57279 |
|---|---|
| Primary city | Wilmot |
| State | South Dakota (SD) |
| County | Roberts FIPS 46109 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 899 |
| Coordinates | 45.418160, -96.872740 |
How ZIP+4 works in 57279
The four digits after the hyphen encode a delivery segment inside 57279. 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 57279 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 57279.
| ZIP | City | Distance |
|---|---|---|
| 57227 | Corona, SD | 8.3 mi |
| 57257 | Peever, SD | 9.5 mi |
| 57251 | Marvin, SD | 10.2 mi |
| 56219 | Browns Valley, MN | 12.7 mi |
| 57266 | Summit, SD | 13.9 mi |
| 57269 | Twin Brooks, SD | 13.9 mi |
| 56211 | Beardsley, MN | 14.8 mi |
| 56210 | Barry, MN | 18 mi |
| 57216 | Big Stone City, SD | 18.7 mi |
| 57252 | Milbank, SD | 19.4 mi |
| 57256 | Ortley, SD | 19.7 mi |
| 57262 | Sisseton, SD | 19.9 mi |
Questions about 57279
What is the ZIP+4 code for 57279?
57279 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 57279, you need to look up a specific street address to get them.
What city is 57279?
57279 is assigned to Wilmot, South Dakota, in Roberts 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.