Elk Township is one of sixteen townships in Jackson County, Illinois, USA. As of the 2010 census, its population was 1,907 and it contained 873 housing units.

According to the 2010 census, the township has a total area of 37.26 square miles (96.5 km), of which 35.8 square miles (93 km) (or 96.08%) is land and 1.46 square miles (3.8 km) (or 3.92%) is water.

• Dowell
• Elkville

• Hallidayboro at 37°53′20″N 89°14′13″W / 37.888939°N 89.237028°W / 37.888939; -89.237028

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

• Tyrone Township, Franklin County (northeast)
• Six Mile Township, Franklin County (east)
• De Soto Township (south)
• Somerset Township (southwest)
• Vergennes Township (west)

The township contains these eight cemeteries: Davis, Davis Number 1, Dutch Hill, Elkville, Gill, Greer, Rees and Russian Orthodox.

• U.S. Route 51

• Campbell Lake
• Fox Lake
• Snider Lake

Historical population

Census	Pop.	Note	%±
2016 (est.)	1,838
U.S. Decennial Census

• Du Quoin Community Unit School District 300
• Elverado Community Unit School District 196

• Illinois' 12th congressional district
• State House District 115
• State Senate District 58

• "Elk Township, Jackson County, Illinois". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved January 17, 2010.
• United States Census Bureau 2007 TIGER/Line Shapefiles
• United States National Atlas

• City-Data.com
• Illinois State Archives