Religion

Roman Catholicism is the most popular religion in the country. According to several sources (Spanish official polls and others), about 76% self-identify as Catholics, about 2% with another religious faith, and about 19% identify as non-believers or atheists. Many Spaniards identify themselves as Catholics because they were baptized, and many do not participate in religious services. A study conducted in October 2006 by the Spanish Centre of Sociological Investigations[9] shows that from the 76% of Spaniards who identify as Catholics or other religious faith, 54% hardly ever or never go to church, 15% go to church some times a year, 10% some time per month and 19% every Sunday or multiple times per week. About 22% of the whole Spanish population attend religious services at least once a month.
Barcelona Cathedral
Barcelona Cathedral

Evidence of the secular nature of contemporary Spain can be seen in the widespread support for the legalization of same-sex marriage in Spain — over 70% of Spaniards support gay marriage according to a 2004 study by the Centre of Sociological Investigations.[10] Indeed, in June 2005 a bill was passed by 187 votes to 147 to allow gay marriage, making Spain the third country in the European Union to allow same-sex couples to marry after Belgium and the Netherlands. This vote was split along conservative-liberal lines, with PSOE and other left-leaning parties supporting the measure and PP against it. Proposed changes to the divorce laws to make the process quicker and to eliminate the need for a guilty party are also popular.

There are also many Protestant denominations, all of them with less than 50,000 members, and about 20,000 Mormons. Evangelism has been better received among Gypsies than among the general population; pastors have integrated flamenco music in their liturgy. Taken together, all self-described "Evangelicals" slightly surpass Jehovah's Witnesses (105,000) in number. Other religious faiths represented in Spain include the Bahá'í Community.

The recent waves of immigration, especially during and after the 90's, have led to an increasing number of Muslims, who have about 1 million members. Muslims had ceased to live in Spain for centuries, ever since the Reconquista, when they were given the ultimatum of either convert to Catholicism or leave the country. By the 16th century, most of them had left the Spanish kingdom. However, the colonial expansion over Northern and Western Africa during the 19th and 20th centuries supposed that large numbers of Muslim populations (those in the Spanish Morocco and the Sahara Occidental) were again under Spanish administration, with a minority of them getting full citizenship. Nowadays, Islam is the second largest religion in Spain, after Roman Catholicism, accounting for approximately 3% of the total population. Hindus and Sikhs account for less than 0.3%.

Along with these waves of immigration, an important number of Latin American people, who are usually strong Catholic practitioners, have helped the Catholic Church to recover part of the congregations that regular masses (Sunday mass) used to have in the sixties and seventies and that was lost in the eighties.

Since the expulsion of the Sephardim in 1492, Judaism was practically nonexistent until the 19th century, when Jews were again permitted to enter the country. Currently there are around 50,000 Jews in Spain, all arrivals in the past century and accounting less than 1% of the total number of inhabitants[citation needed]. There are also many Spaniards (in Spain and abroad) who claim Jewish ancestry to the Conversos, and still practise certain customs. Spain is believed to have been about 8% Jewish on the eve of the Spanish Inquisition.