Clarksville is a city located in Red River County Texas. It is also the county seat of Red River County. With a 2020 population of 2,984, it is the 498th largest city in Texas and the 6275th largest city in the United States . Clarksville is currently declining at a rate of -1.45% annually and its population has decreased by -9.16% since the most recent census, which recorded a population of 3,285 in 2010. Clarksville reached it's highest population of in . Spanning over 3 miles, Clarksville has a population density of 975 people per square mile.
The average household income in Clarksville is $38,359 with a poverty rate of 27.10%. The median rental costs in recent years comes to $639 per month, and the median house value is $39,200. The median age in Clarksville is 42.4 years, 39.7 years for males, and 44.6 years for females.