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.

Spain: Christians as percent of the total population: The latest value from 2013 is 88.8 percent, a decline from 89.3 percent in 2012. In comparison, the world average is 51.1 percent, based on data from 145 countries. Historically, the average for Spain from 1960 to 2013 is 95.9 percent. The minimum value, 88.8 percent, was reached in 2013 while the maximum of 98.9 percent was recorded in 1960.

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.

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.

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 2023, approximately 79 percent of the population aged 75 and older reported being religious. In contrast, in the 18-24 age group, 59.9 percent reported not being religious. Between the ages of 45 and 54, 41.2 percent were not religious.

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.

Espagne: Christians as percent of the total population: Pour cet indicateur, The Cline Center for Democracy fournit des données pour la Espagne de 1960 à 2013. La valeur moyenne pour Espagne pendant cette période était de 95.9 pour cent avec un minimum de 88.8 pour cent en 2013 et un maximum de 98.9 pour cent en 1960.

This dataset is the centerpiece of Pew Research Center's 2014 Religious Landscape Study, a nationally representative telephone survey conducted June 4-Sept. 30, 2014, among a sample of 35,071 U.S. adults. Approximately 60 percent of the interviews were conducted with respondents reached on cellphones (n=21,160) and 40 percent were completed on landlines (n=13,911). A minimum of 300 interviews were conducted in every state and the District of Columbia. Interviewing was conducted in English and Spanish. The survey is estimated to cover 97 percent of the non-institutionalized U.S. adult population; 3 percent of U.S. adults are not reachable by telephone or do not speak English or Spanish well enough to participate in the survey. No adjustments have been made to the data to attempt to account for the small amount of non-coverage.

The size of the national sample is unusually large for a religion survey. There are two main reasons for this. First, the large sample size makes it possible to estimate the religious composition of the U.S. with a high degree of precision. After taking into account the survey's design effect (based on the sample design and survey weights), the margin of error for the results based on the full sample is +/- 0.6 percentage points.

Second, the large sample size makes it possible to describe the characteristics of a wide variety of religious groups, including relatively small groups that cannot be analyzed using data from smaller surveys. With more than 35,000 respondents in total, the Religious Landscape Study includes interviews with roughly 350 in religious groups that account for just 1 percent of the U.S. population, and with 100 or more people in religious groups that are as small as three-tenths of 1 percent of the overall population. For instance, the study includes interviews with 245 Jehovah's Witnesses, a group that accounts for less than 1 percent of the U.S. population and is typically represented by only a few dozen respondents in smaller surveys.

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.

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.

This statistic depicts the perception of Spanish respondents on whether they could be happy without religious beliefs, according to a survey conducted in July 2018. Only ** percent of women and men stated that they could not live a happy life without religious beliefs.

According to the source, the percentage of believers who almost never attend mass or other religious services gradually increased from 55.5 percent in 2011 to 63.1 percent in 2020. A sharp decrease was reported the following years, with the share of non-practicing believers falling to approximately 50.4 percent in 2024.

According to a survey carried out in Spain in 2020, Maghrebis experienced the most discrimination due to their religion or clothing (such as the veil), with 56 percent. In the same year, 45 percent of people of Indo-Pakistani origin also reported being victim of religious discrimination.

Approximately ** percent of pilgrims who arrived in the Spanish city of Santiago de Compostela in 2024 completed the pilgrimage route for religious reasons. Contrastingly, ** percent of pilgrims were at Santiago de Compostela for non-religious reasons.