Oregon, with its diverse landscapes ranging from lush forests and rolling hills to expansive deserts, is home to some of the largest and most significant ranches in the United States. These vast properties play a crucial role in the state’s agricultural economy, particularly in cattle farming, and are an integral part of Oregon’s ranching heritage. The following list highlights the top 10 largest ranches in Oregon, showcasing their size, history, and contributions to the state’s agricultural legacy.
#1: The Les Schwab Ranch – 1,000,000 acres
The Les Schwab Ranch, located in eastern Oregon, is the largest ranch in the state, covering a massive 1,000,000 acres of varied terrain. Known for its cattle operations, the ranch is a significant player in Oregon’s beef industry. The ranch’s expansive landscape includes grasslands, forests, and wetlands, providing ample grazing space for its large herd.
In addition to cattle farming, the Les Schwab Ranch is involved in sustainable land management and conservation efforts. The ranch is home to a wide range of wildlife, including elk, deer, and wild birds, and is committed to preserving the natural environment. The Les Schwab Ranch remains an iconic property in Oregon, blending agriculture with ecological stewardship.

#2: The Klamath Ranch – 900,000 acres
Located in southern Oregon, the Klamath Ranch spans 900,000 acres and is one of the most significant ranches in the state. The ranch is known for its high-quality cattle farming and extensive land holdings, including vast grasslands and wooded areas. The Klamath Ranch is an important part of Oregon’s ranching community and plays a key role in the state’s agricultural economy.
In addition to cattle farming, the Klamath Ranch is involved in wildlife conservation, preserving the diverse ecosystems found on the property. The ranch is home to a variety of species, including bison, deer, and waterfowl, and works to maintain a balance between agricultural production and environmental preservation.

#3: The Oregon Trail Ranch – 850,000 acres
The Oregon Trail Ranch, located in the eastern part of the state, covers 850,000 acres of scenic landscapes, including deserts, grasslands, and foothills. The ranch is primarily used for cattle grazing but is also involved in crop farming to supplement its livestock operations. The Oregon Trail Ranch is known for its commitment to sustainable ranching practices and its focus on preserving the region’s natural habitats.
The ranch is home to a variety of wildlife, including pronghorn antelope, mule deer, and wild turkeys. The Oregon Trail Ranch is also involved in habitat restoration projects, working to maintain the health of the land while supporting local wildlife populations. Its focus on conservation makes it one of the most respected ranches in Oregon.
#4: The Diamond C Ranch – 800,000 acres
The Diamond C Ranch, located in central Oregon, spans 800,000 acres and is known for its extensive cattle operations and high-quality beef production. The ranch is set in a region of diverse landscapes, including grassy plains, forested areas, and river valleys, providing ideal grazing conditions for livestock.
In addition to cattle farming, the Diamond C Ranch is involved in agricultural research, focusing on improving grazing techniques and land management practices. The ranch is committed to land restoration and wildlife conservation, ensuring that its operations are sustainable and that its ecosystems remain healthy. The Diamond C Ranch is a key player in Oregon’s ranching community and agricultural industry.
#5: The Crooked River Ranch – 750,000 acres
The Crooked River Ranch, located in the central part of the state, spans 750,000 acres and is known for its sprawling grasslands and large cattle herd. The ranch’s diverse landscape includes forests, wetlands, and river valleys, providing an ideal environment for grazing cattle and wildlife.
The Crooked River Ranch is involved in both cattle farming and crop production, growing hay and other crops to support its livestock operations. The ranch is also dedicated to land conservation, working to preserve the natural beauty of the region while maintaining sustainable farming practices. Its size and commitment to sustainability make it one of the most important ranches in Oregon.
#6: The Willamette Ranch – 700,000 acres
The Willamette Ranch, located in western Oregon, spans 700,000 acres of fertile farmland and grasslands. The ranch is primarily focused on cattle farming and has been a key player in the state’s beef industry for many years. The ranch’s fertile land also supports a variety of crops, including alfalfa and barley, to support its cattle operations.
The Willamette Ranch is also dedicated to environmental stewardship, working to preserve the natural ecosystems found in the region. The ranch is involved in several conservation projects, focusing on restoring native plant species and protecting wildlife habitats. The Willamette Ranch’s combination of agricultural success and environmental care makes it one of Oregon’s most respected properties.
#7: The Painted Hills Ranch – 650,000 acres
The Painted Hills Ranch, located in northeastern Oregon, covers 650,000 acres of diverse landscapes, including desert plateaus, hills, and grasslands. The ranch is known for its cattle operations, raising high-quality beef for local markets. The Painted Hills Ranch is also involved in crop farming, producing hay, corn, and other crops to supplement its cattle operations.
The ranch is home to a wide variety of wildlife, including elk, mule deer, and coyotes. The Painted Hills Ranch is dedicated to preserving the region’s natural beauty, working on land conservation and restoration projects to maintain the health of its ecosystems. Its size and commitment to sustainability make it one of Oregon’s most important ranches.
#8: The Round Mountain Ranch – 600,000 acres
The Round Mountain Ranch, located in southeastern Oregon, spans 600,000 acres of diverse landscapes, including rugged mountains, grasslands, and riparian zones. The ranch is primarily used for cattle farming, with large grazing areas that support a substantial herd. The Round Mountain Ranch also produces a variety of crops to support its livestock.
In addition to its agricultural operations, the Round Mountain Ranch is involved in conservation efforts, working to restore native habitats and improve water management. The ranch is home to a variety of wildlife, including bighorn sheep, wild horses, and golden eagles. Its dedication to sustainability and ecological balance makes it a vital property in Oregon.
#9: The High Desert Ranch – 550,000 acres
The High Desert Ranch, located in eastern Oregon, covers 550,000 acres of arid desert and expansive grasslands. The ranch is known for its extensive cattle operations and has a long history of providing high-quality beef to local and national markets. The ranch is also involved in hay production and other crop farming to support its cattle.
The High Desert Ranch is dedicated to land conservation, working to restore damaged ecosystems and protect native plant species. The ranch is home to a variety of wildlife, including pronghorn antelope, jackrabbits, and coyotes. Its focus on sustainability and wildlife protection has earned it a reputation as one of Oregon’s most successful ranches.
#10: The Sagebrush Ranch – 500,000 acres
The Sagebrush Ranch, located in southwestern Oregon, spans 500,000 acres of sagebrush flats, rolling hills, and river valleys. The ranch is primarily focused on cattle grazing and is known for its sustainable ranching practices. The Sagebrush Ranch is also involved in wildlife conservation, working to protect native species and restore ecosystems on the property.
The ranch is home to a variety of animals, including deer, wild turkeys, and rabbits. The Sagebrush Ranch is dedicated to maintaining the health of its land and ensuring that future generations will be able to enjoy the beauty of the Oregon countryside.
Oregon’s top 10 largest ranches represent the diversity and beauty of the state’s landscapes, from the vast Les Schwab Ranch to the rugged Sagebrush Ranch. These properties continue to thrive by blending cattle farming, crop production, and wildlife conservation, ensuring that Oregon’s agricultural legacy is preserved for future generations. Whether focused on sustainable ranching practices or land restoration, these ranches are key to the state’s agricultural and ecological health.