Cass County is a county located in the U.S. state of Indiana. As of the 2020 United States Census, its population was 37,870. The county seat is Logansport. Cass County comprises the Logansport, IN Micropolitan Statistical Area.

Logansport is a city in and the county seat of Cass County, Indiana, United States. The population was 18,366 at the 2020 census. Logansport is located in northern Indiana at the junction of the Wabash and Eel rivers, northwest of Kokomo.