Most of 43 countries with a state religion are in Middle East and North Africa with majority Muslim, according to research
More than one in five countries has an official state religion, with the majority being Muslim states, and a further 20% of countries have a preferred or favoured religion.
A slim majority (53%) of counties has no official or preferred religion, and 10 (5%) are hostile to religion, according to a report by the Washington-based Pew Research Center.
Most of the 43 countries with state religions are in the Middle East and North Africa, with a cluster in northern Europe. Islam is the official religion in 27 countries in Asia and sub-Saharan Africa as well North Africa and the Middle East.