Demographic features of the population of Slovenia include population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.
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. Belgium's policy separates the state from the churches, and freedom of religion of the citizens is guaranteed by the country's constitution.
Christianity is the largest religion in Germany. It was introduced to the area of modern Germany by 300 AD, while parts of that area belonged to the Roman Empire, and later, when Franks and other Germanic tribes converted to Christianity from the fifth century onwards. The area became fully Christianized by the time of Charlemagne in the eighth and ninth century. After the Reformation started by Martin Luther in the early 16th century, many people left the Catholic Church and became Protestant, mainly Lutheran and Calvinist. In the 17th and 18th centuries, German cities also became hubs of heretical and sometimes anti-religious freethinking, challenging the influence of religion and contributing to the spread of secular thinking about morality across Germany and Europe.
There are 0.8 — 1.05 billion Protestants worldwide, among approximately 2.5 billion Christians. In 2010, a total of more than 800 million included 300 million in Sub-Saharan Africa, 260 million in the Americas, 140 million in Asia-Pacific region, 100 million in Europe and 2 million in Middle East-North Africa. Protestants account for nearly forty percent of Christians worldwide and more than one tenth of the total human population. Various estimates put the percentage of Protestants in relation to the total number of the world's Christians at 33%, 36%, 36.7%, and 40%, while in relation to the world's population at 11.6% and 13%.
Christianity is the largest religion in Denmark. As of 2024, 71.2% of the population of Denmark were registered members of the Church of Denmark, the officially established church, which is Protestant in classification and Lutheran in orientation.
Religion has been a major influence on the societies, cultures, traditions, philosophies, artistic expressions and laws within present-day Europe. The largest religion in Europe is Christianity. However, irreligion and practical secularisation are also prominent in some countries. In Southeastern Europe, three countries have Muslim majorities, with Christianity being the second-largest religion in those countries. Ancient European religions included veneration for deities such as Zeus. Modern revival movements of these religions include Heathenism, Rodnovery, Romuva, Druidry, Wicca, and others. Smaller religions include Indian religions, Judaism, and some East Asian religions, which are found in their largest groups in Britain, France, and Kalmykia.
Christianity is the largest religion in Luxembourg, with significant minorities of non-religious people and adherents of other faiths.
Religion in Italy has been historically characterised by the dominance of the Catholic Church, the largest branch of Christianity, since the East–West Schism. This is in part due to the importance of Rome in the history of the Church, including its historical status as a leading patriarchate and the presence of the Vatican, the Catholic Church's headquarters and the residence of the Pope—the Bishop of Rome—within its borders. However, due to immigration, notably the influx of Muslims, Eastern Orthodox Christians, Protestants, Buddhists and Hindus, as well as proselytism and secularization, religious pluralism in Italy has increased in the 21st century. Italy also features a pre-Christian Jewish community, an autochthonous Protestant church–the Waldensian Evangelical Church and one of the largest shares of Jehovah's Witnesses in the world.
The Muslims in Slovenia are ethnically mostly Bosniaks and ethnic Muslims. In 2014, there were 48,266 Muslims in Slovenia, making up about 2 percent of the total population. The Muslim community of Slovenia is headed by Nedžad Grabus. There are also a few Muslim migrant workers from Central Asia; however, they are not counted in the census, because they are not citizens of Slovenia.
Christianity in Italy has been historically characterised by the dominance of the Catholic Church since the East–West Schism. However, the country is also home to significant Christian minorities, especially Orthodox Christians, Protestants and Jehovah's Witnesses.
Christianity is the main religion in Romania, with Romanian Orthodoxy being its largest denomination.
Religion in Austria is predominantly Christianity, adhered to by 68.2% of the country's population according to the 2021 national survey conducted by Statistics Austria. Among Christians, 80.9% were Catholics, 7.2% were Orthodox Christians, 5.6% were Protestants, while the remaining 6.2% were other Christians, belonging to other denominations of the religion or not affiliated to any denomination. In the same census, 8.3% of the Austrians declared that their religion was Islam, 1.2% declared to believe in other non-Christian religions, and 22.4% declared they did not belong to any religion, denomination or religious community.
Religion in Sweden has, over the years, become increasingly diverse. Christianity was the religion of virtually all of the Swedish population from the 12th to the early 20th century, but it has rapidly declined throughout the late 20th and early 21st century.
According to the Lithuanian census of 2021, the predominant religion in Lithuania is Christianity, with the largest confession being that of the Catholic Church. There are smaller groups of Orthodox Christians, Evangelical Lutherans, members of Reformed churches, other Protestants, Jews and Muslims as well as people of other religions.
The predominant religion in the Republic of Ireland is Christianity, with the largest denomination being the Catholic Church. The Constitution of Ireland says that the state may not endorse any particular religion and guarantees freedom of religion.
Christianity is the main religion in Belarus, with Eastern Orthodoxy being the largest denomination. The legacy of the state atheism of the Soviet era is apparent in the fact that a proportion of Belarusians are not religious. Moreover, other non-traditional and new religions have sprung up in the country after the end of the Soviet Union.
Estonia, historically a Lutheran Christian nation, is today one of the least religious countries in the world in terms of declared attitudes, with only 14 percent of the population declaring religion to be an important part of their daily life. This is thought to largely be a result of the Soviet occupation of Estonia in 1940, prior to which Estonia had a large Christian majority - according to the 1922 census, 99.3% of the Estonian population were Christians.
The main religion traditionally practiced in Latvia is Christianity. As of 2019, it is the largest religion (68.84%), though only about 7% of the population attends religious services regularly.
Irreligion in Bulgaria pertains to atheism, agnosticism, and secularism among the citizens of Bulgaria. Irreligion is a minority religious position in Bulgaria. Making up approximately 5-10% of Bulgarians, irreligion is the second most common religious stance after Eastern Orthodoxy. Irreligion in Bulgaria is closely tied to the history of Marxism–Leninism and Soviet rule in the country during the 20th century.
Freedom of religion in Slovenia refers to the extent to which people in Slovenia are freely able to practice their religious beliefs, taking into account both government policies and societal attitudes toward religious groups.
