Alexander, county (252 sq mi/653 sq km; 1990 pop. 10,626), extreme S Ill.; Cairo; 37°11'N 89°20'W. Bounded W and S by Mississippi R. and SE by Ohio R.; drained by Cache R. Agr. area (livestock, corn, cotton), with some mfg. (lumber prods.; soybean processing; plastics prods.). Includes part of Shawnee Natl. Forest. One of 17 counties to retain the southern-style commission form of county government. Formed 1819.
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