Idaho Idaho State Government Idaho has notorious roots in the Athabaskan word idaahe, meaning enemy. It was originally applied to part of Colorado before being given to the Gem State. Capital: Boise Largest Cities: Coeur d’Alene, Idaho Falls, Kellogg, Ketchum, Lewiston, Moscow, Nampa, Pocatello, Rexburg, Rigby, Salmon, Sun Valley, Twin Falls Present Constitution Drafted: 1890 Entered Union: July 3, 1890 (43) Motto: “It is forever” State Flower: Syringa State Tree: White Pine State Bird: Mountain Bluebird State Dog: Not Specified State Insect: Monarch Butterfly State Song: “Here We Have Idaho” Nickname: Gem State