Hart County, Kentucky (Formed 1819)
                Land Area          
Year  Population  (sq.mi)   Density
2010     18,199     412.1     44.2
2000     17,445     415.9     41.9
1990     14,890     416.0     35.8
1980     15,402     416.0     37.0
1970     13,980     416.0     33.6
1960     14,119     416.0     33.9
1950     15,321     416.0     36.8
1940     17,239     416.0     41.4
1930     16,169     416.0     38.9
1920     18,544     416.0     44.6
1910     18,173     430.0     42.3
1900     18,390     452.0     40.7
1890     16,439     452.0     36.4
1880     17,133     414.5     41.3
1870     13,687     414.5     33.0
1860     10,348     416.2     24.9
1850      9,093     414.5     21.9
1840      7,031     417.9     16.8
1830      5,191     417.9     12.4
1820      4,184     499.0      8.4