08/31/2026
In 1913, the Idaho Legislature created Minidoka County from a portion of Lincoln County, with Rupert designated as the county seat.
The county’s development was closely connected to the Minidoka Reclamation Project, which brought irrigation to the Snake River Plain and helped transform the surrounding sagebrush country into productive farmland. As settlers arrived, communities grew and agriculture became a cornerstone of the local economy.
More than a century later, agriculture, irrigation, and a strong sense of community remain an important part of Minidoka County’s identity.
Rupert is proud to have been part of the Minidoka County story from the very beginning!