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Union County, PA
Population by Decades

Date Population Population
Change
Annual
% Change
1900 17,592--
1910 16,249-1,343-0.8
1920 15,850-399-0.2
1930 17,4681,6181.0
1940 20,2472,7791.5
1950 23,1502,9031.3
1960 25,6462,4961.0
1970 28,6032,9571.1
1980 32,8704,2671.4
1990 36,1763,3061.0
2000 41,6245,4481.4
Source: U.S. Bureau of Census

 
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