ZIP Code 57325 — Chamberlain, SD
57325 is a standard (street delivery) ZIP code serving Chamberlain, South Dakota, in Brule 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 57325 at a glance
| ZIP code | 57325 |
|---|---|
| Primary city | Chamberlain |
| State | South Dakota (SD) |
| County | Brule FIPS 46015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,335 |
| Coordinates | 43.839610, -99.311440 |
How ZIP+4 works in 57325
The four digits after the hyphen encode a delivery segment inside 57325. 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 57325 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 57325.
| ZIP | City | Distance |
|---|---|---|
| 57365 | Oacoma, SD | 5.6 mi |
| 57370 | Pukwana, SD | 7.3 mi |
| 57569 | Reliance, SD | 13.2 mi |
| 57355 | Kimball, SD | 18.5 mi |
| 57341 | Gann Valley, SD | 20 mi |
| 57339 | Fort Thompson, SD | 20.6 mi |
| 57548 | Lower Brule, SD | 22.9 mi |
| 57534 | Hamill, SD | 25.4 mi |
| 57544 | Kennebec, SD | 26.3 mi |
| 57346 | Stephan, SD | 29.1 mi |
| 57383 | White Lake, SD | 30.9 mi |
| 57369 | Platte, SD | 33.9 mi |
Questions about 57325
What is the ZIP+4 code for 57325?
57325 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 57325, you need to look up a specific street address to get them.
What city is 57325?
57325 is assigned to Chamberlain, South Dakota, in Brule 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.