Plum Hill Township, Washington County, Illinois

Plum Hill Township is located in Washington County, Illinois. As of the 2010 census, its population was 537 and it contained 229 housing units.

Geography
According to the 2010 census, the township has a total area of 37.81 sqmi, of which 37.8 sqmi (or 99.97%) is land and 0.01 sqmi (or 0.03%) is water.