Welcome to Klamath County, Oregon, home to Crater Lake National Park, the Volcanic Legacy Scenic Byway, and Oregon's City of Sunshine, Klamath Falls. Klamath County is home to approximately 70,000 people, with about 21,000 of those people residing in the city limits of Klamath Falls. Klamath County is situated in south central Oregon. The county is bounded on the south by California, on the east by Lake County, on the north by Deschutes County, and on the west by Jackson and Douglas Counties. The county, Oregon's fourth largest, has 6,135 square miles.