Rock Island is a city located in the state of Illinois, situated along the Mississippi River. It is part of the Quad Cities metropolitan area, which includes neighboring cities like Moline, Davenport, and Bettendorf. The city has a rich history, with roots dating back to the early 19th century, and it played a significant role in the development of the region. The city is known for its diverse community and various recreational opportunities. Rock Island Arsenal, a military installation, is located on an island in the river and contributes to the local economy. Additionally, residents enjoy parks, trails, and cultural events that enhance the quality of life in Rock Island.