McClellan Township, Jefferson County, Illinois

As of the 2010 census, its population was 1,255 and it contained 534 housing units.

It is traversed north–south by Interstate Route 57, from it to the east by Interstate 64 and from I-57 to the southwest by State Route 148.

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

The township contains these four cemeteries: Black, Rightnower, South Hickory Hill and Wolf Prairie.

The township contains several churches including:

Map of Illinois highlighting Jefferson County