Greenville is a town located in south central Outagamie County, Wisconsin, United States. The unincorporated community of Greenville is located in the town. It is one of 18 communities that form the basis of the Fox Cities, the third largest metropolitan area in Wisconsin. The population was 6,844 at the 2000 census, however 2008 estimates place the population at 9,401. This accounts for a 147% growth in population since 1990.