Butler County, Kentucky (Formed 1810)
                Land Area          
Year  Population  (sq.mi)   Density
2010     12,690     426.1     29.8
2000     13,010     428.1     30.4
1990     11,245     428.1     26.3
1980     11,064     428.1     25.8
1970      9,723     428.1     22.7
1960      9,586     428.1     22.4
1950     11,309     428.1     26.4
1940     14,371     428.1     33.6
1930     12,620     428.1     29.5
1920     15,197     428.1     35.5
1910     15,805     417.0     37.9
1900     15,896     409.0     38.9
1890     13,956     409.0     34.1
1880     12,181     428.1     28.5
1870      9,404     428.1     22.0
1860      7,927     431.0     18.4
1850      5,755     459.1     12.5
1840      3,898     454.1      8.6
1830      3,058     454.1      6.7
1820      3,083     450.7      6.8