Harrison County, Kentucky (Formed 1794) Land Area Year Population (sq.mi) Density 2010 18,846 306.4 61.5 2000 17,983 309.7 58.1 1990 16,248 309.7 52.5 1980 15,166 309.7 49.0 1970 14,158 309.7 45.7 1960 13,704 309.7 44.2 1950 13,736 309.7 44.4 1940 15,124 309.7 48.8 1930 14,859 309.7 48.0 1920 15,798 309.7 51.0 1910 16,873 311.0 54.3 1900 18,570 327.0 56.8 1890 16,914 327.0 51.7 1880 16,504 302.6 54.5 1870 12,993 302.6 42.9 1860 13,779 314.8 43.8 1850 13,064 314.0 41.6 1840 12,472 309.2 40.3 1830 13,234 311.7 42.5 1820 12,278 282.6 43.4 1810 7,752 268.6 28.9 1800 4,350 268.4 16.2