Plain Township is one of seventeen townships in Kosciusko County, Indiana, United States.

As of the 2020 census, its population was 8,819 (up from 7,698 at 2010[4]) and it contained 4,129 housing units.

The Robert Orr Polygonal Barn was listed on the National Register of Historic Places in 1992.

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

This Kosciusko County, Indiana location article is a stub.