Senate District 18 consists of the following:
COUNTIES:
Cass County, Fulton County, Miami County
Carroll County TOWNSHIPS:
Adams, Carrollton, Jackson, Liberty, Monroe, Rock Creek, Washington
Kosciusko County TOWNSHIPS:
Clay, Franklin, Harrison, Jackson, Lake, Monroe, Seward
Marshall County TOWNSHIPS:
Green, Tippecanoe, Union, Walnut, West
IC 2-1-13-18