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Lyon County, IA
Population by Decades

Date Population Population
Change
Annual
% Change
1900 13,165--
1910 14,6241,4591.1
1920 15,4318070.5
1930 15,293-138-0.1
1940 15,374810.1
1950 14,697-677-0.4
1960 14,468-229-0.2
1970 13,340-1,128-0.8
1980 12,896-444-0.3
1990 11,952-944-0.8
2000 11,763-189-0.2
Source: U.S. Bureau of Census

 
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