ZIP Code 57718 — Black Hawk, SD
57718 is a standard (street delivery) ZIP code serving Black Hawk, South Dakota, in Meade 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 57718 at a glance
| ZIP code | 57718 |
|---|---|
| Primary city | Black Hawk |
| State | South Dakota (SD) |
| County | Meade FIPS 46093 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 7,937 |
| Coordinates | 44.179250, -103.368010 |
How ZIP+4 works in 57718
The four digits after the hyphen encode a delivery segment inside 57718. 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 57718 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 57718.
| ZIP | City | Distance |
|---|---|---|
| 57769 | Piedmont, SD | 5.6 mi |
| 57701 | Rapid City, SD | 9 mi |
| 57759 | Nemo, SD | 9.6 mi |
| 57702 | Rapid City, SD | 10.3 mi |
| 57706 | Ellsworth Afb, SD | 13.6 mi |
| 57732 | Deadwood, SD | 14.2 mi |
| 57741 | Fort Meade, SD | 16.8 mi |
| 57785 | Sturgis, SD | 18.2 mi |
| 57719 | Box Elder, SD | 19.4 mi |
| 57703 | Rapid City, SD | 20.1 mi |
| 57751 | Keystone, SD | 21.7 mi |
| 57745 | Hill City, SD | 23.7 mi |
Questions about 57718
What is the ZIP+4 code for 57718?
57718 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 57718, you need to look up a specific street address to get them.
What city is 57718?
57718 is assigned to Black Hawk, South Dakota, in Meade 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.