Kiribati
males age 16-49: 18,129
females age 16-49: 20,643 (2009 est.)
Korea, North
males age 16-49: 4,104,964
females age 16-49: 4,492,374 (2009 est.)
Korea, South
males age 16-49: 10,991,263
females age 16-49: 10,356,604 (2009 est.)
Kosovo
males age 16-49: 428,685
females age 16-49: 388,848 (2009 est.)
Kuwait
males age 16-49: 935,525
females age 16-49: 519,854 (2009 est.)
Kyrgyzstan
males age 16-49: 1,083,777
females age 16-49: 1,229,406 (2009 est.)
Laos
males age 16-49: 1,023,205
females age 16-49: 1,085,197 (2009 est.)
Latvia
males age 16-49: 410,374
females age 16-49: 463,144 (2009 est.)
Lebanon
males age 16-49: 948,765
females age 16-49: 954,663 (2009 est.)
Lesotho
males age 16-49: 267,083
females age 16-49: 240,868 (2009 est.)