At the end of 2012, there were about 1.6 billion Muslims worldwide. This accounts for about 23 percent of Earth's population. It is the world's second-most common religion after Christianity.
Around the world, the Muslim religion is the most common form of worship in 49 countries. Sixty-two percent of Muslims – almost 1 billion – live in the Pacific region of Asia, in countries such as India and Pakistan. The Middle East and northern Africa are home to the next largest population of Muslims: over 300 million. The third-largest population – almost 250 million Muslims – resides in sub-Saharan African countries. Europe, North America, Latin America and the Caribbean have significantly fewer Muslims.