Des Moines is the capital and the most populous city in the U.S. state of Iowa. It is also the county seat of Polk County. A small portion of the city extends into Warren County. It was incorporated on September 22, 1851, as Fort Des Moines which was shortened to "Des Moines" in 1857. Wikipedia

Rockford is the third largest city in the U.S. state of Illinois, the 160th most populous city in the United States, and the 112th most populous region in the United States. It is the county seat of Winnebago County and is located on both banks of the Rock River in far northern Illinois. Wikipedia