Idaho Prison Inmate Locator
Locate prison inmates in the Idaho Department of Corrections online. Old Idaho Penitentiary
Boise, ID

Idaho Territory was less than ten years old when the territorial prison was built east of Boise in 1870. The penitentiary grew from a single cellhouse into a complex of several distinctive buildings surrounded by a high sandstone wall. Convicts quarried the stone from the nearby ridges and completed all the later construction.