Lincoln Township is one of ten townships in Newton County, Indiana. As of the 2020 census, its population was 4,563 and it contained 1,829 housing units.
Lincoln Township was established in 1872.
According to the 2010 census, the township has a total area of , of which (or 99.60%) is land and (or 0.38%) is water.
(This list is based on USGS data and may include former settlements.)