Religion in Barcelona[1] The most widely practiced religion in Barcelona is Catholic Christianity but secularization is strong, in line with the Spanish and other Western European trends.
[8] In 2011, data from a survey of religious practices showed that 49.5% of Barcelona's residents identified themselves as Catholic.
This number dropped to 45% within the demographic of young people between the ages of 14 - 25.
[8] In 2014, 322,698 people in the province of Barcelona identified as Muslims, including 217,405 immigrants and 105,293 Spanish citizens.
[7][9] In Barcelona, 90% of students that identify as Muslim do not have religious classes and that 90% of teachers of Islamic religion are unemployed.