Spain, once a bastion of Catholicism in Europe, is experiencing an alarming decline in religious practice. According to a recent study by the Center for Sociological Research (CIS), eight out of ten Spaniards no longer identify with any religion. This concerning figure bears witness to a profound crisis of faith in this traditionally Catholic country.
A Changing Religious Landscape
The decline of religious practice in Spain manifests in several ways:
- 80.4% of Spaniards do not identify with any religion
- Only 17% declare themselves practicing Catholics
- 36% say they are non-practicing Catholics
- 16.8% declare themselves atheists, a figure that is rising sharply

This disaffection particularly affects the younger generations. Only 13.6% of 18-29 year-olds and 12.9% of 30-39 year-olds declare themselves actively religious. Conversely, practice remains higher among the elderly, with 37.7% of those over 70 involved in a religious life.
Marked Regional Disparities
Secularization does not affect Spanish territory uniformly. Catalonia appears as the least religious region, with 86.9% non-practitioners. The Basque Country and Galicia follow closely. In contrast, Melilla, Ceuta, and Extremadura remain the strongholds of the Catholic faith in Spain.
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Religious Practice That Persists Nonetheless
Despite this general decline, nearly half of believers (47.6%) still participate in weekly religious ceremonies. Traditions like the Holy Week processions or Christmas Masses continue to attract many faithful.
This situation poses a major challenge for the Spanish Catholic Church. How can the flame of faith be rekindled in an increasingly secularized country? The transmission of Christian values to new generations appears as a crucial challenge for the future of Catholicism in Spain.