Russia
males age 18-49: 1,286,069
females age 18-49: 1,244,264 (2005 est.)
Saint Kitts and Nevis
males age 18-49: 357
females age 18-49: 347 (2005 est.)
Saint Lucia
males age 18-49: 1,651 (2005 est.)
Saint Vincent and the Grenadines
males age 18-49: 1,204 (2005 est.)
Samoa
males age 18-49: 2,306 (2005 est.)
San Marino
males age 18-49: 135 (2005 est.)
Saudi Arabia
males age 18-49: 247,334
females age 18-49: 234,500 (2005 est.)
Senegal
males age 18-49: 129,331
females age 18-49: 129,398 (2005 est.)
Slovakia
males age 18-49: 41,544
females age 18-49: 40,183 (2005 est.)
Slovenia
males age 18-49: 12,816
females age 17-49: 12,178 (2005 est.)