Tunisia
males age 20-49: 2,441,741 (2005 est.)
Turkey
males age 20-49: 16,756,323 (2005 est.)
Turkmenistan
males age 18-49: 1,132,833 (2005 est.)
Uganda
males age 18-49: 5,012,620 (2005 est.)
Ukraine
males age 18-49: 11,067,239 (2005 est.)
United Arab Emirates males age 18-49: 653,181 note: includes non-nationals (2005 est.)
United Kingdom males age 16-49: 14,607,724 (2005 est.)
United States males age 18-49: 67,742,879 females age 18-49: 67,070,144 (2005 est.)
Uruguay
males age 18-49: 764,408 (2005 est.)
Uzbekistan
males age 18-49: 6,340,220 (2005 est.)