Nepal
males age 16-49: 5,146,958
females age 16-49: 4,724,495 (2008 est.)
Netherlands
males age 16-49: 3,233,773
females age 16-49: 3,150,790 (2008 est.)
Netherlands Antilles
males age 16-49: 46,102
females age 16-49: 47,219 (2008 est.)
New Caledonia
males age 16-49: 47,342 (2008 est.)
New Zealand
males age 16-49: 833,073
females age 16-49: 822,807 (2008 est.)
Nicaragua
males age 16-49: 1,235,400
females age 16-49: 1,302,318 (2008 est.)
Niger
males age 16-49: 1,665,108
females age 16-49: 1,548,965 (2008 est.)
Nigeria
males age 16-49: 18,556,755
females age 16-49: 17,288,225 (2008 est.)
Norway
males age 16-49: 888,101
females age 16-49: 862,159 (2008 est.)
Oman
males age 16-49: 663,881
females age 16-49: 543,410 (2008 est.)