Casey County, Kentucky (Formed 1807) Land Area Year Population (sq.mi) Density 2010 15,955 444.2 35.9 2000 15,447 445.6 34.7 1990 14,211 445.6 31.9 1980 14,818 445.6 33.3 1970 12,930 445.6 29.0 1960 14,327 445.6 32.2 1950 17,446 445.6 39.2 1940 19,962 445.6 44.8 1930 16,747 445.6 37.6 1920 17,213 445.6 38.6 1910 15,479 379.0 40.8 1900 15,144 371.0 40.8 1890 11,848 371.0 31.9 1880 10,983 447.7 24.5 1870 8,884 447.7 19.8 1860 6,466 449.8 14.4 1850 6,556 447.7 14.6 1840 4,939 394.5 12.5 1830 4,342 398.2 10.9 1820 4,349 393.6 11.0 1810 3,285 418.8 7.8