Field Township is one of sixteen townships in Jefferson County, Illinois, USA. As of the 2010 census, its population was 1,468 and it contained 637 housing units.

According to the 2010 census, the township has a total area of 37.08 square miles (96.0 km), of which 36.89 square miles (95.5 km) (or 99.49%) is land and 0.19 square miles (0.49 km) (or 0.51%) is water. The township is centered at 38°26′N 88°52′W (38.433,-88.867).

• Divide at 38°26′49″N 88°49′48″W / 38.447°N 88.830°W / 38.447; -88.830
• Texico at 38°26′24″N 88°53′49″W / 38.440°N 88.897°W / 38.440; -88.897

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

• Haines Township, Marion County (north)
• Farrington Township (east)
• Webber Township (southeast)
• Mt. Vernon Township (south)
• Shiloh Township (southwest)
• Rome Township (west)
• Raccoon Township, Marion County (northwest)

The township contains these eight cemeteries: Antioch, Hall, Hickey, Jordan Chapel, Oak Grove, Old Panther Fork, Panther Fork and Union Chapel.

• Miller Lake

Historical population

Census	Pop.	Note	%±
2016 (est.)	1,450
U.S. Decennial Census

• Illinois' 19th congressional district
• State House District 107
• State Senate District 54

• "Field Township, Jefferson 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