Knott County, Kentucky (Formed 1884) Land Area Year Population (sq.mi) Density 2010 16,346 351.5 46.5 2000 17,649 352.2 50.1 1990 17,906 352.2 50.8 1980 17,940 352.2 50.9 1970 14,698 352.2 41.7 1960 17,362 352.2 49.3 1950 20,320 352.2 57.7 1940 20,007 352.2 56.8 1930 15,230 352.2 43.2 1920 11,655 352.2 33.1 1910 10,791 348.0 31.0 1900 8,704 341.0 25.5 1890 5,438 341.0 15.9