ZIP Codes in Fergus Falls, MN
Fergus Falls uses 1 ZIP code, all in Otter Tail County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 1 Fergus Falls ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 56537 | standard | Otter Tail | 19,856 |
Finding a ZIP+4 in Fergus Falls
Knowing which of these 1 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Fergus Falls street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Fergus Falls addresses and download it complete.