Beaverhead County is located in the southwestern part of Montana, USA. It was established in 1865 and is named after the Beaverhead Rock, a significant landmark for early explorers. The county covers an area of approximately 5,570 square miles, making it one of the largest counties in Montana. The county seat is Dillon, which is known for its rich history and outdoor recreational opportunities. Beaverhead County is home to several parks and natural attractions, including parts of the Lemhi National Forest and the Beaverhead-Deerlodge National Forest, offering activities like hiking, fishing, and camping.