Uganda
males age 18-49: 2,889,808
females age 18-49: 2,780,135 (2005 est.)
Ukraine
males age 18-49: 7,376,050
females age 18-49: 9,313,385 (2005 est.)
United Arab Emirates
males age 18-49: 526,671
females age 18-49: 419,975 (2005 est.)
United Kingdom
males age 16-49: 12,046,268
females age 16-49: 11,555,893 (2005 est.)
United States
males age 18-49: 54,609,050
females age 18-49: 54,696,706 (2005 est.)
Uruguay
males age 18-49: 637,445
females age 18-49: 631,046 (2005 est.)
Uzbekistan
males age 18-49: 4,609,621
females age 18-49: 5,383,233 (2005 est.)
Vanuatu
males age 18-49: 33,837 (2005 est.)
Venezuela
males age 18-49: 4,907,947
females age 18-49: 5,151,843 (2005 est.)
Vietnam
males age 18-49: 16,032,358
females age 18-49: 17,921,241 (2005 est.)