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Lancaster County, PA
Population by Decades

Date Population Population
Change
Annual
% Change
1900 159,241--
1910 167,0297,7880.5
1920 173,7976,7680.4
1930 196,88223,0851.3
1940 212,50415,6220.8
1950 234,71722,2131.0
1960 278,35943,6421.7
1970 319,69341,3341.4
1980 362,34642,6531.3
1990 422,82260,4761.6
2000 470,65847,8361.1
Source: U.S. Bureau of Census

 
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