Riverdale is a city in Scott County, Iowa, United States.

[2] Arconic has an aluminum rolling mill in Riverdale that employs approximately 2,000 people.

In 1912, Iowana Dairy Farms was established by Col. G. W. French in what is today the city of Riverdale.

French's herd of Holstein cattle became one of the largest and most outstanding in the United States.

The Aluminum Company of America, (ALCOA), moved to the area in 1946.

After a three-year incorporation challenge by the city of Bettendorf, the Iowa Supreme Court upheld the incorporation and the city of Riverdale was granted its independence on February 10, 1953.

The area was originally called the Tri-Cities which included Moline, Rock Island, and Davenport.

Today the Quad Cities community consists of the larger cities of Davenport, Iowa; Bettendorf, Iowa; Moline, Illinois; Rock Island, Illinois; and East Moline, Illinois, as well as surrounding smaller cities Eldridge, Long Grove, Park View, Blue Grass, Buffalo, Walcott, Maysville, Mount Joy, Pleasant Valley, LeClaire, Panorama Park, and Riverdale in Iowa and Silvis, Milan, Hampton, Carbon Cliff, Port Byron, Andalusia, Coal Valley, and Colona in Illinois.

[4] There are several distinct neighborhoods in Riverdale: As of the census of 2020,[8] there were 379 people, 155 households, and 114 families residing in the city.

Hispanic or Latino persons of any race comprised 4.7% of the population.

17.3% of all households were made up of individuals, and 7.4% had someone living alone who was 65 years of age or older.

24.8% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older.