Iowa City is the county seat of Johnson County, Iowa and the fifth-largest city in the state. AMES is a city located approximately 30 miles north of Des Moines and is the home of Iowa State University. Dubuque is a city located along the Mississippi River in the northeastern corner of the state. Keokuk is a city located in Lee County, Iowa, along the Mississippi River. DAVENPORT is the third-largest city in the state and is located along the Mississippi River in Scott County. Onawa is a city located in Monona County, Iowa. Fort Dodge is a city located in Webster County, Iowa. Cedar Rapids is the second-largest city in the state and is located in Linn County. Fort Madison is a city located in Lee County, Iowa, along the Mississippi River. Council Bluffs is a city located in Pottawattamie County, Iowa, across the Missouri River from Omaha, Nebraska.