Richland County, Illinois
Founding: 1841 Parent counties: Clay and Lawrence Namesake: A descriptive name Seat: Olney (1841–) Land area: 356 square miles Population (2020): 15,813 Population (historic): 4,012 (1850); 12,803 (1870); 15,019 (1890); 15,970 (1910); 14,053 (1930) Periods of population growth: pre-1850–1880; 1890s; 1920–1940; 1960–1980; 2000s Subdivisions: One city; four villages; nine townships Pre-1940 residences (estimated): 1,236 (16.4%) Pre-1940 housing survival rate: 34.7% Pre-1860 housing survival rate (1940): 7.4% Farm housing in disrepair (1950): 9.6% Nonfarm housing in disrepair (1950): 10% Average farmhouse value (1930): $905 Average outbuilding value (1930): $730 Average farmhouse size (1940): 5.3 rooms Number of farms (1920): 1,930 Average farm size (1920): 96.5 acres Sources of settlement: Ohio, Indiana, Kentucky, and Germany ___________________...