Clarksville, VA has a population of 1,303 and is the 13,541st largest city in the United States. The population density is 448 per sq mi which is 134% higher than the Virginia average and 394% higher than the national average. The median age in Clarksville is 46 which is approximately 21% higher than the Virginia average of 38. In Clarksville, 53% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 58% of Clarksville residents were born in Virginia, 40% were born out of state, 0% were born outside of the United States and 2% were foreign born.