Fastest growing religion: Introduction Islam is the

Introduction Islam is the fastest growing religion in the world, driven by high fertility rates, migration, and conversion. With a global Muslim population expected to reach 2.2 billion by 2030, Islam is rapidly expanding across continents, including Europe, Asia, and Africa. This article provides an in-depth look at why Islam is experiencing such growth and what this means for global religious demographics. The Future of World Religions : Population Growth Projections, 2010-2050 Why Muslims Are Rising Fastest and the Unaffiliated Are Shrinking as a Share of the World’s Population Note (June 2025): Religious composition estimates in this report are based on 2010 baseline numbers that have since been updated. Learn how Islam, Christianity and Hinduism are the fastest growing religions globally, with projections and trends for 2025. See the factors, regions and patterns that drive their expansion and diversity. Learn about the spread and increase of different religions around the world, based on statistics, projections and factors. Find out which religion is the fastest - growing by percentage and worldwide spread, and which religion is declining in number and influence.