Riverside is a city located in Montgomery County, Ohio. As of the 2000 census, the city had a total population of 23,545. In 1994, Riverside merged with the surrounding Mad River Township.
Riverside is located at 39°46'44" North, 84°7'23" West (39.778858, -84.123094).
According to the United States Census Bureau, the city has a total area of 20.5 km2 (7.9 mi2). 20.4 km2 (7.9 mi2) of it is land and 0.1 km2 (0.04 mi2) of it is water. The total area is 0.51% water.
As of the census of 2000, there are 23,545 people, 9,768 households, and 6,427 families residing in the city. The population density is 1,156.6/km2 (2,996.6/mi2). There are 10,289 housing units at an average density of 505.4/km2 (1,309.5/mi2). The racial makeup of the city is 91.45% White, 4.26% African American, 0.21% Native American, 1.76% Asian, 0.05% Pacific Islander, 0.61% from other races, and 1.66% from two or more races. 1.55% of the population are Hispanic or Latino of any race.
There are 9,768 households out of which 28.3% have children under the age of 18 living with them, 49.3% are married couples living together, 12.2% have a female householder with no husband present, and 34.2% are non-families. 27.9% of all households are made up of individuals and 10.1% have someone living alone who is 65 years of age or older. The average household size is 2.41 and the average family size is 2.95.
In the city the population is spread out with 23.5% under the age of 18, 10.3% from 18 to 24, 28.4% from 25 to 44, 23.0% from 45 to 64, and 14.9% who are 65 years of age or older. The median age is 37 years. For every 100 females there are 94.5 males. For every 100 females age 18 and over, there are 91.6 males.
The median income for a household in the city is $37,034, and the median income for a family is $43,650. Males have a median income of $33,987 versus $23,525 for females. The per capita income for the city is $18,702. 10.1% of the population and 6.7% of families are below the poverty line. Out of the total population, 12.4% of those under the age of 18 and 10.6% of those 65 and older are living below the poverty line.