Religion in Bulgaria 1AD to 2022

In the latest years, there has been a decline of both the historic religions of Bulgaria—Orthodox Christianity and Islam—, which shrank respectively from 86% in 1992 to 84% in 2001 to 61% in 2011 and from 13% in 1992 to 12% in 2001 to 8% in 2011. In the 2011 census, the question about the religious affiliation became optional, and thus 21.8% of the total population didn’t answer. Until the census of 1992, Bulgarians were obliged to declare the historic religious belonging of their parents and/or ancestors, while since 2001 people were allowed to declare personal belief in a religion or unbelief in any religion (irreligion and atheism). After the end of the People’s Republic of Bulgaria (1946–1990), the revival of Islam was stronger than Orthodox Christianity.The Bulgarian Orthodox Church has seen the most serious decline from 2001 onwards