Sri Lanka
males age 16-49: 4,477,437
females age 16-49: 4,683,716 (2008 est.)
Sudan
males age 16-49: 5,586,468
females age 16-49: 5,678,427 (2008 est.)
Suriname
males age 16-49: 105,770
females age 16-49: 109,666 (2008 est.)
Swaziland
males age 16-49: 122,260 (2008 est.)
Sweden
males age 16-49: 1,699,115
females age 16-49: 1,637,868 (2008 est.)
Switzerland
males age 16-49: 1,513,984
females age 16-49: 1,478,761 (2008 est.)
Syria
males age 16-49: 4,242,401
females age 16-49: 4,218,648 (2008 est.)
Taiwan
males age 16-49: 5,112,737
females age 16-49: 5,036,346 (2008 est.)
Tajikistan
males age 16-49: 1,391,287
females age 16-49: 1,561,826 (2008 est.)
Tanzania
males age 16-49: 5,278,833 (2008 est.)