Spencer County, Kentucky (Formed 1824)
                Land Area          
Year  Population  (sq.mi)   Density
2010     17,061     186.7     91.4
2000     11,766     185.9     63.3
1990      6,801     185.9     36.6
1980      5,929     185.9     31.9
1970      5,488     185.9     29.5
1960      5,680     185.9     30.6
1950      6,157     185.9     33.1
1940      6,757     185.9     36.3
1930      6,606     185.9     35.5
1920      7,785     185.9     41.9
1910      7,567     186.0     40.7
1900      7,406     204.0     36.3
1890      6,760     204.0     33.1
1880      7,040     192.9     36.5
1870      5,956     192.9     30.9
1860      6,188     193.9     31.9
1850      6,842     192.9     35.5
1840      6,581     195.6     33.6
1830      6,812     193.3     35.2