ZIP Code 57566 — Parmelee, SD
57566 is a standard (street delivery) ZIP code serving Parmelee, South Dakota, in Todd 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 57566 at a glance
| ZIP code | 57566 |
|---|---|
| Primary city | Parmelee |
| State | South Dakota (SD) |
| County | Todd FIPS 46121 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,184 |
| Coordinates | 43.312370, -101.100190 |
How ZIP+4 works in 57566
The four digits after the hyphen encode a delivery segment inside 57566. 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 57566 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 57566.
| ZIP | City | Distance |
|---|---|---|
| 57560 | Norris, SD | 10.5 mi |
| 57570 | Rosebud, SD | 12.5 mi |
| 57572 | Saint Francis, SD | 13.3 mi |
| 57574 | Tuthill, SD | 19.2 mi |
| 57547 | Long Valley, SD | 20.8 mi |
| 57555 | Mission, SD | 22.1 mi |
| 57579 | White River, SD | 24 mi |
| 69216 | Kilgore, NE | 26.5 mi |
| 69212 | Crookston, NE | 26.9 mi |
| 57551 | Martin, SD | 31.5 mi |
| 57577 | Wanblee, SD | 31.7 mi |
| 57521 | Belvidere, SD | 33.5 mi |
Questions about 57566
What is the ZIP+4 code for 57566?
57566 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 57566, you need to look up a specific street address to get them.
What city is 57566?
57566 is assigned to Parmelee, South Dakota, in Todd 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.