Casner Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 1,239 and it contained 510 housing units.
Geography
According to the 2010 census, the township has a total area of , of which (or 99.89%) is land and (or 0.11%) is water. The township is centered at 38°21'N 89°5'W (38.349,-89.088). It is traversed east–west by Interstate Route 64 and State Route 15.
Cities, towns, villages
Woodlawn
Unincorporated towns
Jefferson City at
Roaches at
(This list is based on USGS data and may include former settlements.)
Adjacent townships
Grand Prairie Township (north) Rome Township (northeast) Shiloh Township (east) McClellan Township (southeast) Blissville Township (south) DuBois Township, Washington County (southwest) Ashley Township, Washington County (west) Richview Township, Washington County (west) Irvington Township, Washington County (northwest)
Cemeteries
The township contains these three cemeteries: Locust Grove, Mount Catherine and Randolph.