Nelson County, Kentucky (Formed 1785)
                Land Area          
Year  Population  (sq.mi)   Density
2010     43,437     417.5    104.0
2000     37,477     422.6     88.7
1990     29,710     422.7     70.3
1980     27,584     422.7     65.3
1970     23,477     422.7     55.5
1960     22,168     422.7     52.4
1950     19,521     422.7     46.2
1940     18,004     422.7     42.6
1930     16,551     422.7     39.2
1920     16,137     422.7     38.2
1910     16,830     411.0     40.9
1900     16,587     434.0     38.2
1890     16,417     434.0     37.8
1880     16,609     411.7     40.3
1870     14,804     411.7     36.0
1860     15,799     411.1     38.4
1850     14,789     411.7     35.9
1840     13,637     408.1     33.4
1830     14,932     406.2     36.8
1820     16,273     464.0     35.1
1810     14,078     464.0     30.3
1800      9,866     463.6     21.3
1790     11,315   6,253.2      1.8