Hardin County, Kentucky (Formed 1793) Land Area Year Population (sq.mi) Density 2010 105,543 623.3 169.3 2000 94,174 628.0 150.0 1990 89,240 628.0 142.1 1980 88,917 628.0 141.6 1970 78,421 628.0 124.9 1960 67,789 628.0 107.9 1950 50,312 628.0 80.1 1940 29,108 628.0 46.4 1930 20,913 628.0 33.3 1920 24,287 628.0 38.7 1910 22,696 606.0 37.5 1900 22,937 616.0 37.2 1890 21,304 616.0 34.6 1880 22,564 627.9 35.9 1870 15,705 627.9 25.0 1860 15,189 624.2 24.3 1850 14,525 627.9 23.1 1840 16,357 875.9 18.7 1830 12,849 875.5 14.7 1820 10,498 1,116.3 9.4 1810 7,531 1,505.3 5.0 1800 3,653 1,916.5 1.9