1. Idaho was officially admitted to the Union on January 26, 1890, becoming the 43rd state in the United States.

2. In 1863 on January 26, the Idaho Territory was established by an act of the United States Congress, which included the modern-day states of Idaho, Montana, and Wyoming.

3. On January 26, 1846, the famous fur trapper and explorer John C. Fremont arrived in the Boise River Valley, where he named the Boise River and surrounding mountains after himself. This area is now home to the city of Boise, the state capital.

4. In 1887 on January 26, the famous American naturalist and writer John Muir visited Idaho and explored the Snake River Canyon, which he called "one of the grandest scenes in nature."

5. On January 26, 1949, the Idaho State Board of Education officially established Idaho State College, which later became Idaho State University and is now the state's third-largest public university.