The main religion in Bahrain, Islam, is the state religion. Of the Bahrain population, almost all the nationals practice Islam. The majority of the population, some 80% practice% practise Shia Islam. As per the 2001 Census, 81 per cent are Muslims, 9 per cent are Christians and other religions constitute 10 %.
Also, in recent years, due to immigration and guest worker arrivals from non-Muslim countries, such as India, Philippines and Sri Lanka, the percentage of Muslims in the country has declined.