Zionsville is a suburban town located in the extreme southeast area of Boone County, Indiana, United States, northwest of Indianapolis. The population was 14,160 at the 2010 census, and grew to 26,784 in the Census 2016 estimates.Zionsville promotes itself as a tourist attraction, centered around its village-styled downtown area. This area primarily consists of Main Street, paved entirely in brick, which is lined with small retail stores and restaurants.