Troy Township is one of seven townships in Perry County, Indiana, United States. As of the 2020 census, its population was 11,961 and it contained 5,845 housing units.[1] It is by far the most populous township in the county, covering almost two thirds of the overall county population.
According to the 2010 census, the township has a total area of 44.31 square miles (114.8 km2), of which 43.04 square miles (111.5 km2) (or 97.13%) is land and 1.27 square miles (3.3 km2) (or 2.87%) is water.[3]