Muslim Population 2025. The world’s muslim population is expected to increase by about 35% in the next 20 years, rising from 1.6 billion in 2010 to 2.2 billion by 2030, according to new population projections by the. The world’s muslim population is expected to increase by about 35% in the next 20 years, rising from 1.6 billion in 2010 to 2.2 billion by 2030, according to new population projections by the pew research center’s forum.
Key findings from the data include: By 2030, the world’s total muslim population is expected to increase by 35 percent over its 2010 level, to 2.2 billion people.