sentences:  According to the 2010 census, the township has a total area of , of which (or 99.30%) is land and (or 0.70%) is water.The township is centered at 38°21′N 88°52′W (38.349,-88.859).It is traversed north-south by State Route 37, east-west by State Route 15, and diagonally across its southwest corner by State Route 142.