ZIP Code 57564 — Onida, SD
57564 is a standard (street delivery) ZIP code serving Onida, South Dakota, in Sully 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 57564 at a glance
| ZIP code | 57564 |
|---|---|
| Primary city | Onida |
| State | South Dakota (SD) |
| County | Sully FIPS 46119 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 962 |
| Coordinates | 44.724010, -100.012100 |
How ZIP+4 works in 57564
The four digits after the hyphen encode a delivery segment inside 57564. 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 57564 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 57564.
| ZIP | City | Distance |
|---|---|---|
| 57520 | Agar, SD | 11 mi |
| 57522 | Blunt, SD | 14.9 mi |
| 57501 | Pierre, SD | 19.9 mi |
| 57455 | Lebanon, SD | 22.9 mi |
| 57442 | Gettysburg, SD | 24 mi |
| 57536 | Harrold, SD | 24.5 mi |
| 57540 | Holabird, SD | 26.8 mi |
| 57345 | Highmore, SD | 29.6 mi |
| 57473 | Seneca, SD | 31.8 mi |
| 57450 | Hoven, SD | 35 mi |
| 57532 | Fort Pierre, SD | 36.9 mi |
| 57346 | Stephan, SD | 42.6 mi |
Questions about 57564
What is the ZIP+4 code for 57564?
57564 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 57564, you need to look up a specific street address to get them.
What city is 57564?
57564 is assigned to Onida, South Dakota, in Sully 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.