Bonneville County

Bonneville County spans approximately 1,900 square miles (4,900 square kilometers) across southeastern Idaho and includes the Snake River along with numerous outdoor recreation areas. The landscape combines agricultural land with natural river valleys that draw visitors for outdoor activities.

The county was established in 1911 and named after Benjamin Bonneville, a French-born military officer who explored the American West during territorial expansion. The region transitioned from early mining settlements near Caribou Mountain into an agricultural center over time.

The Museum of Idaho in Idaho Falls presents regional history exhibitions and educational programs that showcase the heritage of southeastern Idaho communities.

Public administration operates from Idaho Falls, which serves as the main hub for county services and information. Visitors can explore the area by car and easily access local information centers and services throughout the region.

Potato cultivation began in the region during the late 1880s and continues to shape the local economy and landscape today. This agricultural shift transformed the area into a significant farming region in the northwestern United States.

Location: Idaho

Inception: February 7, 1911

Capital city: Idaho Falls

Shares border with: Madison County, Caribou County, Lincoln County, Teton County, Teton County, Jefferson County, Bingham County

Website: https://bonnevillecountyidaho.gov

GPS coordinates: 43.38000,-111.60000

Latest update: December 7, 2025 19:25