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Polk County, FL
Population by Decades

Date Population Population
Change
Annual
% Change
1900 12,472--
1910 24,14811,6766.8
1920 38,66114,5134.8
1930 72,29133,6306.5
1940 86,66514,3741.8
1950 123,99737,3323.6
1960 195,13971,1424.6
1970 227,22232,0831.5
1980 321,65294,4303.5
1990 405,38283,7302.3
2000 483,92478,5421.8
Source: U.S. Bureau of Census

 
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