The 2005 CIA World Factbook

by United States. Central Intelligence Agency

Cambodia
18 years of age; universal

Cameroon
20 years of age; universal

Canada
18 years of age; universal

Cape Verde
18 years of age; universal

Cayman Islands
18 years of age; universal

Central African Republic
21 years of age; universal

Chad
18 years of age; universal

Chile
18 years of age; universal and compulsory

China
18 years of age; universal

Cocos (Keeling) Islands
NA