Kenya
total: 18.7 years
male: 18.6 years
female: 18.8 years (2009 est.)
Kiribati
total: 20.8 years
male: 20.3 years
female: 21.3 years (2009 est.)
Korea, North
total: 33.5 years
male: 32.1 years
female: 34.9 years (2009 est.)
Korea, South
total: 37.3 years
male: 36 years
female: 38.5 years (2009 est.)
Kosovo
total: 25.9 years
male: 25.4 years
female: 26.4 years (2009 est.)
Kuwait
total: 26.2 years
male: 28.1 years
female: 22.7 years (2009 est.)
Kyrgyzstan
total: 24.4 years
male: 23.6 years
female: 25.3 years (2009 est.)
Laos
total: 19.3 years
male: 19 years
female: 19.6 years (2009 est.)
Latvia
total: 40.1 years
male: 37.1 years
female: 43.3 years (2009 est.)
Lebanon
total: 29.3 years
male: 28 years
female: 30.5 years (2009 est.)