ZIP Code 57724 — Camp Crook, SD
57724 is a standard (street delivery) ZIP code serving Camp Crook, South Dakota, in Harding 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 57724 at a glance
| ZIP code | 57724 |
|---|---|
| Primary city | Camp Crook |
| State | South Dakota (SD) |
| County | Harding FIPS 46063 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 167 |
| Coordinates | 45.666960, -104.060560 |
How ZIP+4 works in 57724
The four digits after the hyphen encode a delivery segment inside 57724. 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 57724 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 57724.
| ZIP | City | Distance |
|---|---|---|
| 59319 | Capitol, MT | 18.8 mi |
| 57720 | Buffalo, SD | 23.3 mi |
| 59324 | Ekalaka, MT | 26.3 mi |
| 57776 | Redig, SD | 39 mi |
| 59311 | Alzada, MT | 41.1 mi |
Questions about 57724
What is the ZIP+4 code for 57724?
57724 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 57724, you need to look up a specific street address to get them.
What city is 57724?
57724 is assigned to Camp Crook, South Dakota, in Harding 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.