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Columbia County, PA
Population by Decades

Date Population Population
Change
Annual
% Change
1900 39,896--
1910 48,4678,5712.0
1920 48,349-1180.0
1930 48,8034540.1
1940 51,4132,6100.5
1950 53,4602,0470.4
1960 53,489290.0
1970 55,1141,6250.3
1980 61,9676,8531.2
1990 63,2021,2350.2
2000 64,1519490.1
Source: U.S. Bureau of Census

 
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