ZIP Code 57528 — Colome, SD
57528 is a standard (street delivery) ZIP code serving Colome, South Dakota, in Tripp 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 57528 at a glance
| ZIP code | 57528 |
|---|---|
| Primary city | Colome |
| State | South Dakota (SD) |
| County | Tripp FIPS 46123 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 833 |
| Coordinates | 43.178140, -99.759010 |
How ZIP+4 works in 57528
The four digits after the hyphen encode a delivery segment inside 57528. 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 57528 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 57528.
| ZIP | City | Distance |
|---|---|---|
| 57529 | Dallas, SD | 10.1 mi |
| 57580 | Winner, SD | 16.9 mi |
| 57533 | Gregory, SD | 20.8 mi |
| 68778 | Springview, NE | 21.4 mi |
| 57584 | Witten, SD | 26.5 mi |
| 57523 | Burke, SD | 26.6 mi |
| 69220 | Sparks, NE | 27.3 mi |
| 68753 | Mills, NE | 27.6 mi |
| 57534 | Hamill, SD | 27.6 mi |
| 57541 | Ideal, SD | 30.1 mi |
| 68759 | Newport, NE | 36.3 mi |
Questions about 57528
What is the ZIP+4 code for 57528?
57528 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 57528, you need to look up a specific street address to get them.
What city is 57528?
57528 is assigned to Colome, South Dakota, in Tripp 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.