CARBONDALE, a city of Jackson county, Illinois, U.S.A., 8om. S.E. of St. Louis; on Federal highway 51, and served by the Illinois Central railway system. The population in 1920 was 6,267, and was 7,528 in 193o by the Federal census. It is an important coal-mining region, as the name intimates, and peaches, apples and other fruits are grown extensively. The city is a railway division point, and has a tie-manufacturing plant and other industries. It is the seat of the Southern Illinois State Normal university (estab lished in 1874), which has an enrolment of over 3,000.