Thomson is a village along Illinois Route 84 near the Mississippi River in Carroll County, Illinois, United States. The population was 590 at the 2010 census, up from 559 at the 2000 census. Just north of the village is the Thomson Correctional Center, a mostly-unused former state prison, purchased by the Federal Bureau of Prisons in 2012. Currently AUSP Thomson houses over 100 low- security inmates as it remodels to federal maximum-security standards.
Thomson is known for wonderful [watermelon]]s, and it has the nickname "Melon Capital of the World."