Clarksville, IA has a population of 1,276 and is the 13,655th largest city in the United States. The population density is 957 per sq mi which is 1651% higher than the Iowa average and 956% higher than the national average. The median age in Clarksville is 42 which is approximately 9% higher than the Iowa average of 38. In Clarksville, 71% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 86% of Clarksville residents were born in Iowa, 12% were born out of state, 1% were born outside of the United States and 0% were foreign born.
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The population density in Clarksville is 1651% higher than Iowa.
The median age in Clarksville is 9% higher than Iowa.
In Clarksville 98.20% of the population is White.
In Clarksville 0.78% of the population is Black or African American.