ZIP Code 56278 — Ortonville, MN
56278 is a standard (street delivery) ZIP code serving Ortonville, Minnesota, in Big Stone 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 56278 at a glance
| ZIP code | 56278 |
|---|---|
| Primary city | Ortonville |
| State | Minnesota (MN) |
| County | Big Stone FIPS 27011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,698 |
| Coordinates | 45.345000, -96.377180 |
How ZIP+4 works in 56278
The four digits after the hyphen encode a delivery segment inside 56278. 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 56278 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 56278.
| ZIP | City | Distance |
|---|---|---|
| 56276 | Odessa, MN | 7.8 mi |
| 57216 | Big Stone City, SD | 7.8 mi |
| 56225 | Clinton, MN | 8.2 mi |
| 56227 | Correll, MN | 10.7 mi |
| 56212 | Bellingham, MN | 14.7 mi |
| 57252 | Milbank, SD | 14.9 mi |
| 56240 | Graceville, MN | 15.8 mi |
| 57227 | Corona, SD | 16.7 mi |
| 56210 | Barry, MN | 17.1 mi |
| 56221 | Chokio, MN | 17.1 mi |
| 56207 | Alberta, MN | 18.4 mi |
| 56208 | Appleton, MN | 19.1 mi |
Questions about 56278
What is the ZIP+4 code for 56278?
56278 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 56278, you need to look up a specific street address to get them.
What city is 56278?
56278 is assigned to Ortonville, Minnesota, in Big Stone 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.