The Fremont County Courthouse is located at 151 West 1st North, St. Anthony, Idaho 83445. Phone: 208-624-7401.
Fremont County was the first county created after Idaho was admitted to the Union. It was organized by the Legislature in 1893 from the northern part of Bingham County. It was named for John C. Fremont, the pathfinder who surveyed the West for the Government.
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