According to a survey conducted in Spain in September 2024, **** percent of respondents stated they considered themselves lapsed ********. The second-largest denomination was practicing *********, with nearly ** percent of respondents.

Although traditionally a Catholic country, Spain saw a decline in the number of believers over the past years. Compared to 2011, when the share of believers accounted for slightly over 70 percent of the Spanish population, the Catholic community lost approximately 15 percentage points of their faithful by June 2025 with a share of 56.1 percent of the surveyed population. Believers of a religion other than Catholicism accounted for approximately 3.6 percent of the Spanish population in 2025 according to the most recent data. A Catholic majority, a practicing minority Going to mass is no longer a thing in Spain, or so it would seem when looking at the latest statistics about the matter: over 47 percent of those who consider themselves Catholics almost never attend any religious service in June 2025. The not so Catholic Spain Around 37 percent of the surveyed population stated to be either non-believers or full atheists in 2025. Non-believers or people that do not have a religious faith fluctuated over the past years with the latest figures showing a 21 percent of people that categorize themselves as so. The share of Spanish atheists is on the rise according to the most recent surveys, taking up 13.3 percent of respondents in June 2025.

Catholicism was the main religion in Spain as of 2022, with a total of **** million adherents. Islam followed second, with *** followers. Catalonia was the autonomous community with the largest number of Muslims in Spain.

In 2024, approximately ** percent of the population aged 75 and older reported being religious. In contrast, in the ***** age group, ****percent reported not being religious. Between the ages of ** and **, **** percent were not religious.

Since 1980, the percentage of nonreligious people has more than quadrupled. In that year, 8.5 percent of the Spanish population was nonreligious. By 2024, more than 39 percent of the Spanish population reported not being religious.

In June 2025, the percentage of believers in a religion other than Catholicism in Spain reached *** percent. The largest share was reached in May 2024 and January 2025, when *** of respondents claimed to follow a religion other than Catholicism.

As of May 2023, the Popular Party (PP) is the party that has gained the most voting intentions from the Spanish Catholic population, with nearly 40 percent of practicing Catholics and approximately 27 percent of non-practicing Catholics intending to vote for this party. The preference of non-believing atheists, with more than 22 percent, is towards the Sumar party. As for believers in other religions, more than 24 percent stated that they would not vote in the July 23 elections.

Spain has a long history of Islamic tradition under its belt. From cuisine to architecture, the southern European country has been linked to the North of Africa through many common elements. At the end of 2023, there were approximately 2.41 million Muslims in Spain, most of them of Spanish and Moroccan nationality, with upwards of eight hundred thousand believers in both cases. With a Muslim population of more than 660,000 people, Catalonia was home to the largest Muslim community in Spain as of the same date.

The not so Catholic Spain

Believers of a religion other than Catholicism accounted for approximately 3 percent of the Spanish population, according to the most recent data. Although traditionally a Catholic country, Spain saw a decline in the number of believers over the past years. Compared to previous years, when the share of believers accounted for slightly over 70 percent of the Spanish population, the Catholic community lost ground, while still being the major religion for the foreseable future.

A Catholic majority, a practicing minority

Going to mass is no longer a thing in Spain, or so it would seem when looking at the latest statistics about the matter: 50 percent of those who consider themselves Catholics almost never attend any religious service in 2024. The numbers increased until 2019, from 55.5 percent of the population never attending religious services in 2011 to 63.1 percent in 2019. The share of population that stated to be practicing believers and go to mass every Sunday and on the most important holidays accounted for only 15.5 percent.

This statistic presents the share of the Spanish population affiliated with a religious denomination in 2018, broken down by specific denomination. To that date, about ** percent of the population were affiliated with the Roman Catholic Church, whereas approximately ** percent said they did not have any affiliation with any particular religious denomination.

In 2023, ** percent of the population surveyed in Spain agreed with the idea that religious practices are important for the moral life of citizens. This represents an increase of * percentage points compared to 2017, when ** percent of Spaniards agreed.

In the ********* school year, about **** million students were enrolled in Catholic religious education. In that year, elementary school students were the largest group, with about **** million enrolled.

In 2024, the religious denomination other than the Catholic Church with the highest number of places of worship in Spain was the Evangelical Church with more than ***** churches, followed by Islam with roughly ***** mosques across the country.

In 2023, ** percent of surveyed Spaniards believed that being religious correlates with happiness, while nearly ********* of respondents believed that religious people make better citizens. Meanwhile, the percentage of residents in Spain who are not religious continues to grow.

In 2023, the number of baptisms celebrated in the Catholic Church in Spain exceeded *******, being the second most popular celebratory activity that year, surpassed only by first communions, which totaled almost *******.

According to a survey carried out in 2020, nearly ** percent of young people in Spain thought that religion was either important or very important. This indicated an increase in religiosity across the Spanish youth compared to the previous survey, conducted in 2016, when this share stood at ** percent.

In 2023, Andalusia featured more than ******* foreign Muslims and approximately ******* Spanish Muslims, which represented the third highest amount of Spanish Muslims and the second highest of foreign Muslims. Catalonia featured the highest number for both foreign and national Muslims that year.

In 2022, around ** percent of Muslims surveyed said they had already been the victim of religious discrimination in Spain. Followers of the Jewish religion were the second most likely to report discrimination, with around ** percent.

In 2024, the Spanish state set a budget of *** million euros for the financing of minority religions. Of this, more than half a million euros was granted to the Federation of Evangelical Religious Entities of Spain, while approximately ******* euros was granted to the Islamic Commission of Spain.

In 2023, Catalonia ranked as the Spanish autonomous community with the highest number of Muslims with more than *******. It was followed by Andalusia with approximately *******.

In 2022, ** percent of the very religious agreed that science has a negative impact on religious belief, while only ** percent of the moderately religious agreed. On the other hand, ** percent of the not very religious population disagreed with this impact.