1994History
In 1994, Riverside merged with the surrounding Mad River Township.
2000History
=== 2000 census ===
As of the census of 2000, there were 23,545 people, 9,768 households, and 6,427 families living in the city.
2010History
=== 2010 census ===
As of the census of 2010, there were 25,201 people, 10,284 households, and 6,696 families living in the city.