The city of Klamath 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 Klamath 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 Klamath Falls ZIP Code is important not only for mailing purposes but also for location-based services, navigation, and demographic reference.
| Post Office | Klamath Falls |
| County | Klamath |
| State | Oregon |
| ZIP Code | 97603 |
| Post Office | Klamath Falls |
| County | Klamath |
| State | Oregon |
| ZIP Code | 97601 |
| Post Office | Klamath Falls |
| County | Klamath |
| State | Oregon |
| ZIP Code | 97602 |