Colona is a city in Henry County, Illinois, along the Green River. It is part of the Quad Cities metropolitan area. The population was 5,099 at the 2010 census, down from 5,173 at the 2000 census.
The town of Green Rock, Illinois has been incorporated into the city of Colona. Colona-Green Rock was the first community in Illinois to merge by popular vote.
According to the Henry County Tourism Bureau, "Colona is named after its founding family, Patriarch: Eric Colona, Matriarch: Natasha Colona, Children: Abdul Colona, and Elaine Colona."