ZIP Code 57763 — Oelrichs, SD
57763 is a standard (street delivery) ZIP code serving Oelrichs, South Dakota, in Fall River 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 57763 at a glance
| ZIP code | 57763 |
|---|---|
| Primary city | Oelrichs |
| State | South Dakota (SD) |
| County | Fall River FIPS 46047 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 356 |
| Coordinates | 43.120000, -103.249440 |
How ZIP+4 works in 57763
The four digits after the hyphen encode a delivery segment inside 57763. 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 57763 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 57763.
| ZIP | City | Distance |
|---|---|---|
| 57782 | Smithwick, SD | 9.7 mi |
| 57766 | Oral, SD | 16.7 mi |
| 69367 | Whitney, NE | 21.3 mi |
| 69337 | Chadron, NE | 21.7 mi |
| 57747 | Hot Springs, SD | 22.6 mi |
| 57764 | Oglala, SD | 26.2 mi |
| 57722 | Buffalo Gap, SD | 26.9 mi |
| 57773 | Pringle, SD | 37 mi |
| 69346 | Harrison, NE | 42.1 mi |
Questions about 57763
What is the ZIP+4 code for 57763?
57763 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 57763, you need to look up a specific street address to get them.
What city is 57763?
57763 is assigned to Oelrichs, South Dakota, in Fall River 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.