8-49: 3,168,048 (2005 est.)

Kenya
males age 18-49: 3,963,532
females age 18-49: 3,471,926 (2005 est.)

Kiribati
males age 18-49: 14,231 (2005 est.)

Korea, North
males age 17-49: 4,810,831
females age 17-49: 4,853,270 (2005 est.)

Korea, South
males age 20-49: 10,115,817
females age 20-49: 9,721,914 (2005 est.)

Kuwait
males age 18-49: 737,292
females age 18-49: 405,207 (2005 est.)

Kyrgyzstan
males age 18-49: 871,493
females age 18-49: 1,024,568 (2005 est.)

Laos
males age 15-49: 954,816
females age 15-49: 1,006,082 (2005 est.)

Latvia
males age 19-49: 361,098
females age 19-49: 422,913 (2005 est.)

Lebanon
males age 18-49: 821,762
females age 18-49: 865,770 (2005 est.)

Lesotho
males age 18-49: 180,797
females age 18-49: 160,681 (2005 est.)

Liberia
males age 18-49: 267,430
females age 18-49: 286,231 (2005 est.)

Libya
males age 17-49: 1,291,624
females age 17-49: 1,230,824 (2005 est.)

Liechtenstein
males age 18-49: 6,250 (2005 est.)

Lithuania
males age 19-49: 590,606
females age 19-49: 676,102 (2005 est.)

Luxembourg
males age 17-49: 90,279
females age 17-49: 88,638 (2005 est.)

Macau
males age 18-49: 91,299 (2005 est.)

Macedonia
males age 18-49: 411,156
females age 18-49: 397,839 (2005 est.)

Madagascar
males age 18-49: 2,218,662
females age 18-49: 2,408,810 (2005 est.)

Malawi
males age 18-49: 1,226,802 (2005 est.)

Malaysia
males age 18-49: 4,574,854
females age 18-49: 4,613,321 (2005 est.)

Maldives
males age 18-49: 56,687
females age 18-49: 54,454 (2005 est.)

Mali
males age 18-49: 1,244,176
females age 18-49: 1,226,226 (2005 est.)

Malta
males age 18-49: 74,525
females age 18-49: 71,333 (2005 est.)

Marshall Islands
males age 18-49: 10,792 (2005 est.)

Mauritania
males age 18-49: 370,513
females age 18-49: 384,269 (2005 est.)

Mexico
males age 18-49: 19,058,337
females age 18-49: 21,966,796 (2005 est.)

Micronesia, Federated States of
males age 18-49: 18,914 (2005 est.)

Moldova
males age 18-49: 693,913
females age 18-49: 911,568 (2005 est.)

Monaco
males age 18-49: 4,971 (2005 est.)

Mongolia
males age 18-49: 570,435
females age 18-49: 607,918 (2005 est.)

Montserrat
males age 18-49: 1,899 (2005 est.)

Morocco
males age 18-49: 6,484,787
females age 18-49: 6,675,729 (2005 est.)

Mozambique
males age 18-49: 1,75