Syro-Malabar Catholic Church's population is 3,800,000.
The population of Armenian Catholic Church is 700,800.
Melkite Greek Catholic Church's population is 2,010.
Melkite Greek Catholic Church's population is 1,600,000.
The majority of the icelandic population is protestant. There is though one catholic church in Reykjavík.
If population membership is the sign of importance then it is the Roman Catholic Church.
It's just Catholic, not Roman Catholic. Roman is an epithet first commonly used in England after the protestant revolt to describe the Catholic Church. It is never used by the official Catholic Church. . Wikipedia lists the Catholic population of Canada in 2011 as 12,728,900 or 38.7% of the population.
There are about 1.8 billion Catholics worldwide.
There are Catholics in Egypt but the majority of the population is Muslim and the larger Christian Church is the Coptic Church.
The dominant religion of Spain is the Roman Catholic Church.
France is often called 'the eldest daughter of the Catholic Church' because it has had an unbroken relationship with the church. It is estimated that over half of France's population?æis Catholic.
Albanian Byzantine Catholic Church Armenian Catholic Church Bulgarian Greek Catholic Church Chaldean Catholic Church Coptic Catholic Church Patriarchate Ethiopian Catholic Church Byzantine Church of Croatia, Serbia and Montenegro Greek Byzantine Catholic Church Hungarian Byzantine Catholic Church Italo-Albanian Byzantine Catholic Church Macedonian Catholic Church Maronite Catholic Church Melkite Greek-Catholic Church Romanian Greek-Catholic Church Ruthenian Byzantine Catholic Church Slovak Byzantine Catholic Church Syriac Catholic Church Patriarchate Syro-Malabar Catholic Church Syro-Malankara Catholic Church Ukrainian Greek-Catholic Church
Most Croatians are Roman Catholic, with the majority of the population identifying as members of the Roman Catholic Church.