Clarksville is a city located in Clark County Indiana. With a 2020 population of 21,394, it is the 44th largest city in Indiana and the 1754th largest city in the United States . Clarksville is currently declining at a rate of -0.38% annually and its population has decreased by -1.52% since the most recent census, which recorded a population of 21,724 in 2010. Clarksville reached it's highest population of 21,657 in 2011. Spanning over 10 miles, Clarksville has a population density of 2,147 people per square mile.
The average household income in Clarksville is $61,563 with a poverty rate of 12.32%. The median rental costs in recent years comes to $821 per month, and the median house value is $119,300. The median age in Clarksville is 40.3 years, 37.7 years for males, and 42.5 years for females.