Clarksville is located in Ionia county Michigan with a geographic area of 0.5 square miles. The total population in Clarksville is 371 with 44.5% male and 55.5% female. Children under age 5 represent 6.2% of the population, under age 18 equal 19.9% of the population and over age 65 is 21.6% of the population. The median household income is $50,417, per capita income is $28,504. There are a total of 175 housing units with 65.7% owner occupied. Education includes 33.1% of residents that are high school graduates and 24.6% with a bachelor's degree or higher. The average temperature in Clarksville in the summer is 67 degrees, and in the winter 23 degrees.