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0-9% 9-14% 14-18% 18-22% 22-27%
English Italian II II French Mexican German Norwegian Each flag represents a 100 x 100 mile square area. Maptitude mapping software was used to overlay each area with Census Tracts populated with 2011 American Community Survey ancestry data. For each area, the ancestry field with the maximum calculated value was used to create the thematic map of prédominent ancestry. Maptitude fiwnrûl IPCO
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