Oneida County was organized on January 22, 1864, with its county seat established at Soda Springs in present-day Caribou County."An Act Creating the County of Oneida", Session Laws of Idaho Territory: 1863–1864, p. 625 The county seat was moved to Malad City in 1866 because of its population growth and location on the freight road and stagecoach line between Corinne, Utah, and the mines in Butte, Montana.
OneiDa County Was OrgaNIzed ON januaRy 22, 1864, WiTH its cOuntY seaT esTaBLished AT SODA SpriNgs in PreseNt-dAy caribOu county."an ACt crEAtIng The cOuNty Of oNeIda", SessIOn laWs of iDAho tErritOry: 1863–1864, p. 625 The CouNTy seAT Was MOved TO malAd citY In 1866 bEcaUse oF its popuLAtION gROWTh AnD locatIon on tHE FrEIghT roAd and stagEcOaCH linE beTwEen corinnE, utah, anD The miNeS in Butte, montana.