CENTERVILLE, a city of southern Iowa, U.S.A., 9om. N.W. of Keokuk; the county seat of Appanoose county. It is served by the Burlington, the Rock Island and the Iowa Southern Utili ties railways. The population in 193o Federal census was 8,147. Large quantities of coal and of pure gypsum are mined in the vicin ity, and there are great deposits of shale. The city has railway shops, iron works, a large creamery and a stump-puller factory. The town was platted in 1846, and chartered as a city in 1870. Until 1849 it was called Chaldea.