ZIP Code 57448 — Hosmer, SD
57448 is a standard (street delivery) ZIP code serving Hosmer, South Dakota, in McPherson 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 57448 at a glance
| ZIP code | 57448 |
|---|---|
| Primary city | Hosmer |
| State | South Dakota (SD) |
| County | McPherson FIPS 46089 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 404 |
| Coordinates | 45.611960, -99.418590 |
How ZIP+4 works in 57448
The four digits after the hyphen encode a delivery segment inside 57448. 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 57448 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 57448.
| ZIP | City | Distance |
|---|---|---|
| 57471 | Roscoe, SD | 14.8 mi |
| 57437 | Eureka, SD | 15.3 mi |
| 57428 | Bowdle, SD | 16.8 mi |
| 57456 | Leola, SD | 21.7 mi |
| 57457 | Long Lake, SD | 22 mi |
| 57452 | Java, SD | 22.7 mi |
| 57451 | Ipswich, SD | 26.4 mi |
| 57475 | Tolstoy, SD | 28.2 mi |
| 57466 | Onaka, SD | 28.5 mi |
| 58413 | Ashley, ND | 29.1 mi |
| 57450 | Hoven, SD | 34 mi |
| 58581 | Zeeland, ND | 35.1 mi |
Questions about 57448
What is the ZIP+4 code for 57448?
57448 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 57448, you need to look up a specific street address to get them.
What city is 57448?
57448 is assigned to Hosmer, South Dakota, in McPherson 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.