Greenbush Township, Warren County, Illinois

Greenbush Township is located in Warren County, Illinois. As of the 2010 census, its population was 533 and it contained 286 housing units.

Geography
According to the 2010 census, the township has a total area of 35.81 sqmi, of which 35.45 sqmi (or 98.99%) is land and 0.36 sqmi (or 1.01%) is water.