ZIP Code 57553 — Milesville, SD
57553 is a standard (street delivery) ZIP code serving Milesville, South Dakota, in Haakon 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 57553 at a glance
| ZIP code | 57553 |
|---|---|
| Primary city | Milesville |
| State | South Dakota (SD) |
| County | Haakon FIPS 46055 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 162 |
| Coordinates | 44.485470, -101.644890 |
How ZIP+4 works in 57553
The four digits after the hyphen encode a delivery segment inside 57553. 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 57553 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 57553.
| ZIP | City | Distance |
|---|---|---|
| 57622 | Cherry Creek, SD | 12.5 mi |
| 57748 | Howes, SD | 19.3 mi |
| 57567 | Philip, SD | 24.4 mi |
| 57552 | Midland, SD | 26.6 mi |
| 57537 | Hayes, SD | 28.9 mi |
| 57775 | Quinn, SD | 32.9 mi |
| 57790 | Wall, SD | 38.2 mi |
Questions about 57553
What is the ZIP+4 code for 57553?
57553 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 57553, you need to look up a specific street address to get them.
What city is 57553?
57553 is assigned to Milesville, South Dakota, in Haakon 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.