Riverdale Park is a city located in Maryland. With a 2020 population of 7,221, it is the 28th largest city in Maryland and the 3885th largest city in the United States. Riverdale Park is currently declining at a rate of -0.03% annually but its population has increased by 3.81% since the most recent census, which recorded a population of 6,956 in 2010. Riverdale Park reached it's highest population of 7,233 in 2016. Spanning over 2 miles, Riverdale Park has a population density of 4,574 people per square mile.
The average household income in Riverdale Park is $90,219 with a poverty rate of 12.57%. The median rental costs in recent years comes to $1,166 per month, and the median house value is $304,100. The median age in Riverdale Park is 34.1 years, 32.2 years for males, and 35.2 years for females. For every 100 females there are 112.6 males.