from Wikipedia--
The following states recognize some form of Christianity as their state or official religion (by denomination): == Jurisdictions which recognize Roman Catholicism as their state or official religion: * Argentina * Costa Rica * Liechtenstein * Malta * Monaco * Some cantons of Switzerland (state religion): ** Appenzell Innerrhoden (declared "religion of the people of Appenzell Innerrhoden") ** Nidwalden ** Schwyz ** Uri * Vatican City (official religion) == Jurisdictions which recognize one of the Eastern Orthodox Churches as their state religion: * Greece (Church of Greece) * Finland: Finnish Orthodox Church has a special relationship with the Finnish state. The internal structure of the church is described in the Orthodox Church Act. The church has a power to tax its members and corporations, the majority of which is owned by them. The church does not consider itself a state church, as the state does not have the authority to affect its internal workings or theology. == Jurisdictions which recognize a Lutheran church as their state religion: * Denmark (Church of Denmark) * Iceland (Church of Iceland) * Norway (Church of Norway) * Finland: Evangelical Lutheran Church of Finland has a special relationship with the Finnish state, its internal structure being described in a special law, the Church Act. The Church Act can be amended only by a decision of the Synod of the Evangelical Lutheran Church and subsequent ratification by the parliament. The church has a power to tax its members and all corporations, except those the majority of which is owned by members of the Finnish Orthodox Church. The state collects these taxes for the church, for a fee. On the other hand, the church is required to give a burial place for everyone in its graveyards.[13] The Finnish president also decides the themes for the intercession days. The church does not consider itself a state church, as the Finnish state does not have the power to influence its internal workings or its theology, although it has a veto in those changes of the internal structure which require changing the Church Act. Neither does the Finnish state accord any precedence to Lutherans or the Lutheran faith in its own acts. == Jurisdictions that recognise an Anglican church as their state religion: * England (Church of England) == Jurisdictions which recognize a Reformed church as their state religion: * Some cantons of Switzerland (Swiss Reformed Church): ** Aargau ** Basel-Country ** Berne ** Glarus ** Graubünden ** Schwyz ** Thurgau ** Uri ** Zurich * Scotland - the Church of Scotland is the national church, but is not a "state church" and has complete independence from the state in spiritual matters, thus being both established and free.[14]p.161 The Monarch of the United Kingdom is an ex officio member. == Jurisdictions which recognize an Old Catholic church as their state religion: * Some cantons of Switzerland (Christian Catholic Church of Switzerland): ** Aargau ** Basel-Country ** Berne
All countries have an official nationally accepted religion. Every country has more than one religion that is practiced within it though.
ARMENIA
In the African country of Niger, the main religion is Islam. Other religions that are practiced are Animism and Christianity.
Denmark is a very unreligious country. Main religion would be Christianity if any.
The main religion is Christianity...
The two main religions in South Korea are Christianity and Buddhism.
The most popular religion in Zambia is Christianity. The Zambian constitution recognized Christianity as the official religion in 1996.
Christianity is their main religion. In Canada there is no one religion, although Christianity is one of the most followed religions, it is not the main one because there is no main religion.
I think I can safely say California has them all.
Christianity.
The main religion in Venezuela is Christianity
Christianity is Alaska's main religion.
the main religion is Christianity, Hindu
Australia has Christianity as its main religion.