 The 116th district includes all or parts of Cahokia, Chester, Columbia, Dupo, East Carondelet, East St. Louis, Red Bud, Smithton, Sparta and Waterloo.He is the son of former U.S. Representative Jerry Costello, whose district overlapped his son's.In 2018, Jerry Costello Jr. was named by J.B. Pritzker a member of the Prtizker's Agriculture Transition Committee.