Italy
total: 42.9 years
male: 41.4 years
female: 44.4 years (2008 est.)
Jamaica
total: 23.4 years
male: 22.9 years
female: 24 years (2008 est.)
Japan
total: 43.8 years
male: 42.1 years
female: 45.7 years (2008 est.)
Jersey
total: 42.3 years
male: 41.6 years
female: 43.1 years (2008 est.)
Jordan
total: 23.9 years
male: 24.6 years
female: 23.2 years (2008 est.)
Kazakhstan
total: 29.3 years
male: 27.8 years
female: 31.1 years (2008 est.)
Kenya
total: 18.6 years
male: 18.5 years
female: 18.8 years (2008 est.)
Kiribati
total: 20.6 years
male: 20.1 years
female: 21.1 years (2008 est.)
Korea, North
total: 32.7 years
male: 31.2 years
female: 34.2 years (2008 est.)
Korea, South
total: 36.7 years
male: 35.5 years
female: 37.9 years (2008 est.)