Clarksville is a city located in Iowa. With a 2020 population of 1,300, it is the 229th largest city in Iowa and the 9245th largest city in the United States. Clarksville is currently declining at a rate of -1.96% annually and its population has decreased by -9.66% since the most recent census, which recorded a population of 1,439 in 2010. Clarksville reached it's highest population of 1,440 in 2010. Spanning over 1 miles, Clarksville has a population density of 987 people per square mile.
The average household income in Clarksville is $55,290 with a poverty rate of 12.66%. The median rental costs in recent years comes to $547 per month, and the median house value is $101,900. The median age in Clarksville is 36.6 years, 34.8 years for males, and 40.7 years for females. For every 100 females there are 107.2 males.