The city of Fergus Falls is assigned specific ZIP Code(s) by the United States Postal Service (USPS) to make mail delivery accurate and efficient. A ZIP Code in Fergus Falls helps identify the correct postal area, ensuring that letters, parcels, and packages reach the right neighborhood or post office without delay. For residents, businesses, and visitors, knowing the correct Fergus Falls ZIP Code is important not only for mailing purposes but also for location-based services, navigation, and demographic reference.
| Post Office | Fergus Falls |
| County | Otter Tail |
| State | Minnesota |
| ZIP Code | 56537 |
| Post Office | Fergus Falls |
| County | Otter Tail |
| State | Minnesota |
| ZIP Code | 56538 |