ZIP Code 57021 — Davis, SD
57021 is a standard (street delivery) ZIP code serving Davis, South Dakota, in Turner 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 57021 at a glance
| ZIP code | 57021 |
|---|---|
| Primary city | Davis |
| State | South Dakota (SD) |
| County | Turner FIPS 46125 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 319 |
| Coordinates | 43.272300, -96.977970 |
How ZIP+4 works in 57021
The four digits after the hyphen encode a delivery segment inside 57021. 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 57021 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 57021.
| ZIP | City | Distance |
|---|---|---|
| 57039 | Lennox, SD | 7.1 mi |
| 57036 | Hurley, SD | 8.3 mi |
| 57015 | Chancellor, SD | 10.3 mi |
| 57014 | Centerville, SD | 11.1 mi |
| 57070 | Viborg, SD | 11.5 mi |
| 57077 | Worthing, SD | 11.5 mi |
| 57053 | Parker, SD | 12.4 mi |
| 57064 | Tea, SD | 13.7 mi |
| 57004 | Beresford, SD | 16.4 mi |
| 57106 | Sioux Falls, SD | 17.8 mi |
| 57032 | Harrisburg, SD | 17.9 mi |
| 57013 | Canton, SD | 17.9 mi |
Questions about 57021
What is the ZIP+4 code for 57021?
57021 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 57021, you need to look up a specific street address to get them.
What city is 57021?
57021 is assigned to Davis, South Dakota, in Turner 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.