ZIP Code 56542 — Fosston, MN
56542 is a standard (street delivery) ZIP code serving Fosston, 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 56542 at a glance
| ZIP code | 56542 |
|---|---|
| Primary city | Fosston |
| State | Minnesota (MN) |
| County | Polk FIPS 27119 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,486 |
| Coordinates | 47.566790, -95.723310 |
How ZIP+4 works in 56542
The four digits after the hyphen encode a delivery segment inside 56542. 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 56542 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 56542.
| ZIP | City | Distance |
|---|---|---|
| 56556 | Mcintosh, MN | 10 mi |
| 56651 | Lengby, MN | 10.1 mi |
| 56592 | Winger, MN | 13.4 mi |
| 56516 | Bejou, MN | 14.2 mi |
| 56646 | Gully, MN | 16 mi |
| 56535 | Erskine, MN | 16.8 mi |
| 56634 | Clearbrook, MN | 17.1 mi |
| 56557 | Mahnomen, MN | 17.6 mi |
| 56644 | Gonvick, MN | 17.7 mi |
| 56621 | Bagley, MN | 17.9 mi |
| 56715 | Brooks, MN | 19.6 mi |
| 56684 | Trail, MN | 21 mi |
Questions about 56542
What is the ZIP+4 code for 56542?
56542 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 56542, you need to look up a specific street address to get them.
What city is 56542?
56542 is assigned to Fosston, 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.