Final answer:
Approximately 71% of Spain's population is Roman Catholic.
Step-by-step explanation:
The Roman Catholic Church has a significant presence in Spain, with a majority of the population identifying as Roman Catholic. According to a survey conducted in 2019, around 71% of Spain's population identified as Roman Catholic.
This high percentage is rooted in the historical influence of Catholicism in Spain, dating back to the time of the Roman Empire and strengthened during the period of Muslim rule.
While Catholicism remains the dominant religion in Spain, there has been a decline in religious affiliation in recent years, with more people identifying as non-religious or aligning with other denominations.
Learn more about Religion in Spain