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New Castle County, DE
Population by Decades

Date Population Population
Change
Annual
% Change
1900 109,697--
1910 123,18813,4911.2
1920 148,23925,0511.9
1930 161,03212,7930.8
1940 179,56218,5301.1
1950 218,87939,3172.0
1960 307,44688,5673.5
1970 385,85678,4102.3
1980 398,11512,2590.3
1990 441,94643,8311.0
2000 500,26558,3191.2
Source: U.S. Bureau of Census

 
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