Jersey
total: 40.1 years
male: 38.5 years
female: 41.2 years (2010 est.)
Jordan
total: 21.8 years
male: 21.6 years
female: 22.1 years (2010 est.)
Kazakhstan
total: 29.9 years
male: 28.4 years
female: 31.6 years (2010 est.)
Kenya
total: 18.8 years
male: 18.7 years
female: 18.9 years (2010 est.)
Kiribati
total: 22.2 years
male: 21.4 years
female: 23 years (2010 est.)
Korea, North
total: 33.9 years
male: 32.5 years
female: 35.2 years (2010 est.)
Korea, South
total: 37.9 years
male: 36.5 years
female: 39.1 years (2010 est.)
Kosovo
total: 26.3 years
male: 25.8 years
female: 26.8 years (2010 est.)
Kuwait
total: 26.4 years
male: 28.2 years
female: 22.9 years (2010 est.)
Kyrgyzstan
total: 24.7 years
male: 23.8 years
female: 25.6 years (2010 est.)