Clarksville is a village in Ionia County in the U.S. state of Michigan. As of the 2010 census, the village population was 394. The village is within Campbell Township. The Clarksville ZIP code 48815 serves the northern portion of the township as well the southern portion of Boston Township and small portions of Odessa Township on the east and Bowne Township in Kent County on the west. The biggest thing to happen in Clarksville since 1992 is the opening of a Dollar General store in 2020.