Iowa Iowa State Government Iowa comes from the Dakota word yuxba, meaning sleepy ones. Capital: Des Moines Largest Cities: Ames, Cedar Rapids, Council Bluffs, Davenport, Dubuque, Fort Dodge, Iowa City, Mason City, Sioux City, Waterloo Present Constitution Drafted: 1857 Entered Union: December 28, 1846 (29) Motto: “Our Liberties We Prize and Our Rights We Will Maintain” State Flower: Wild Rose State Tree: Oak State Bird: Easter Finch State Dog: Not Specified State Insect: Not Specified State Song: “Song of Iowa” Nickname: The Hawkeye State