Religion in Belgium

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Christianity is the largest religion in Belgium, with the Catholic Church representing the largest community, though it has experienced a significant decline since the 1950s (when it was the nominal religion of over 80% of the population). Belgium's policy separates the state from the churches, and freedom of religion of the citizens is guaranteed by the country's constitution.

According to the Eurobarometer poll carried out by the European Commission in 2021, the share of Christians was 49%, with Catholicism being the largest denomination at 44%. Protestants and other Christians comprised 4% and Orthodox Christians comprised 1%. Non-religious people comprised 41% of the population and were divided between those who primarily identified as atheists (15%) or as agnostics (26%). A further 2% of the population was Muslim, with the remainder belonging to other religious or unspecified groups.