As of the 2010 census, its population was 6,166 and it contained 2,182 housing units.

[2] It was originally named Homer Township; the name was changed to Plato on July 2, 1850.

According to the 2010 census, the township has a total area of 33.51 square miles (86.8 km2), all land.

[2] (This list is based on USGS data and may include former settlements.)

The township contains these five cemeteries: Plato Center, L R Baker, North Plato, Udina and Washington Memorial.