Niles Township is one of twelve townships in Delaware County, Indiana. According to the 2010 census, its population was 1,360 and it contained 566 housing units.
According to the 2010 census, the township has a total area of , of which (or 99.59%) is land and (or 0.44%) is water.
The township contains three cemeteries: Buckles, Granville and Memorial Park.
It is in the Delaware Community School Corporation.