Toone, TN. Toone is a town in Hardeman County, Tennessee, United States. The population was 330 at the 2000 census. Toone is located at 35°21′8″N 88°57′14″W / 35.35222°N 88.95389°W / 35.35222; -88.95389 (35.352311, -88.953801). According to the United States Census Bureau, the town has a total area of 0.8 square miles (2.1 km²), all of it land.