ZIP Code 57790 — Wall, SD
57790 is a standard (street delivery) ZIP code serving Wall, South Dakota, in Pennington 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 57790 at a glance
| ZIP code | 57790 |
|---|---|
| Primary city | Wall |
| State | South Dakota (SD) |
| County | Pennington FIPS 46103 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 1,147 |
| Coordinates | 44.103780, -102.206830 |
How ZIP+4 works in 57790
The four digits after the hyphen encode a delivery segment inside 57790. 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 57790 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 57790.
| ZIP | City | Distance |
|---|---|---|
| 57775 | Quinn, SD | 10 mi |
| 57791 | Wasta, SD | 16 mi |
| 57767 | Owanka, SD | 18.3 mi |
| 57567 | Philip, SD | 24.5 mi |
| 57780 | Scenic, SD | 25.7 mi |
| 57761 | New Underwood, SD | 28.5 mi |
| 57725 | Caputa, SD | 31.7 mi |
| 57748 | Howes, SD | 34.6 mi |
| 57792 | White Owl, SD | 34.8 mi |
| 57737 | Enning, SD | 34.9 mi |
| 57553 | Milesville, SD | 38.3 mi |
Questions about 57790
What is the ZIP+4 code for 57790?
57790 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 57790, you need to look up a specific street address to get them.
What city is 57790?
57790 is assigned to Wall, South Dakota, in Pennington 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.