ZIP Code 56684 — Trail, MN
56684 is a standard (street delivery) ZIP code serving Trail, Minnesota, in Polk 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 56684 at a glance
| ZIP code | 56684 |
|---|---|
| Primary city | Trail |
| State | Minnesota (MN) |
| County | Polk FIPS 27119 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 280 |
| Coordinates | 47.871090, -95.704010 |
How ZIP+4 works in 56684
The four digits after the hyphen encode a delivery segment inside 56684. 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 56684 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 56684.
| ZIP | City | Distance |
|---|---|---|
| 56646 | Gully, MN | 6.6 mi |
| 56742 | Oklee, MN | 6.7 mi |
| 56644 | Gonvick, MN | 10.8 mi |
| 56715 | Brooks, MN | 12.2 mi |
| 56748 | Plummer, MN | 14.5 mi |
| 56556 | Mcintosh, MN | 16.5 mi |
| 56671 | Red Lake, MN | 18.5 mi |
| 56634 | Clearbrook, MN | 19 mi |
| 56725 | Goodridge, MN | 19.1 mi |
| 56535 | Erskine, MN | 20.8 mi |
| 56542 | Fosston, MN | 21 mi |
| 56754 | Saint Hilaire, MN | 23.6 mi |
Questions about 56684
What is the ZIP+4 code for 56684?
56684 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 56684, you need to look up a specific street address to get them.
What city is 56684?
56684 is assigned to Trail, Minnesota, in Polk 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.