McClellan Township is one of ten townships in Newton County, Indiana. As of the 2020 census, its population was 223 and it contained 110 housing units.
McClellan Township was established in 1862.
McClellan township used to include Beaver Lake with its Bogus islands, before it was drained.
According to the 2010 census, the township has a total area of , all land.
(This list is based on USGS data and may include former settlements.)