IL · CountyWashington County, Illinois14 cities in the directoryCitiesCityPopulationRegionAddieville253—Ashley447—Centralia11,787—Du Bois179—Hoyleton505—Irvington566—Nashville3,006—New Minden163—Oakdale197—Okawville1,347—Radom181—Richview231—Venedy123—Wamac965—