ZIP Code 57018 — Colton, SD
57018 is a standard (street delivery) ZIP code serving Colton, South Dakota, in Minnehaha 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 57018 at a glance
| ZIP code | 57018 |
|---|---|
| Primary city | Colton |
| State | South Dakota (SD) |
| County | Minnehaha FIPS 46099 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,495 |
| Coordinates | 43.799950, -96.979010 |
How ZIP+4 works in 57018
The four digits after the hyphen encode a delivery segment inside 57018. 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 57018 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 57018.
| ZIP | City | Distance |
|---|---|---|
| 57016 | Chester, SD | 6.2 mi |
| 57041 | Lyons, SD | 7.2 mi |
| 57020 | Crooks, SD | 11.3 mi |
| 57035 | Humboldt, SD | 11.6 mi |
| 57003 | Baltic, SD | 11.8 mi |
| 57048 | Montrose, SD | 11.8 mi |
| 57033 | Hartford, SD | 12.7 mi |
| 57022 | Dell Rapids, SD | 12.8 mi |
| 57075 | Wentworth, SD | 13.5 mi |
| 57042 | Madison, SD | 15 mi |
| 57055 | Renner, SD | 15.1 mi |
| 57107 | Sioux Falls, SD | 16.2 mi |
Questions about 57018
What is the ZIP+4 code for 57018?
57018 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 57018, you need to look up a specific street address to get them.
What city is 57018?
57018 is assigned to Colton, South Dakota, in Minnehaha 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.