ZIP Code 56031 — Fairmont, MN
56031 is a standard (street delivery) ZIP code serving Fairmont, Minnesota, in Martin 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 56031 at a glance
| ZIP code | 56031 |
|---|---|
| Primary city | Fairmont |
| State | Minnesota (MN) |
| County | Martin FIPS 27091 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 11,665 |
| Coordinates | 43.622460, -94.467570 |
How ZIP+4 works in 56031
The four digits after the hyphen encode a delivery segment inside 56031. 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 56031 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 56031.
| ZIP | City | Distance |
|---|---|---|
| 56039 | Granada, MN | 7.7 mi |
| 56075 | Northrop, MN | 7.9 mi |
| 56181 | Welcome, MN | 8.4 mi |
| 56121 | Ceylon, MN | 9.2 mi |
| 50531 | Dolliver, IA | 13.5 mi |
| 56088 | Truman, MN | 14.1 mi |
| 50514 | Armstrong, IA | 14.4 mi |
| 56171 | Sherburn, MN | 14.9 mi |
| 56127 | Dunnell, MN | 16.1 mi |
| 50590 | Swea City, IA | 17 mi |
| 56176 | Trimont, MN | 17.1 mi |
| 56098 | Winnebago, MN | 17.6 mi |
Questions about 56031
What is the ZIP+4 code for 56031?
56031 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 56031, you need to look up a specific street address to get them.
What city is 56031?
56031 is assigned to Fairmont, Minnesota, in Martin 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.