86.88% of Indonesia's population is Muslim.

Based on data from the Directorate General of Population and Civil Registration (Dukcapil) of the Ministry of Home Affairs, Indonesia's population totaled 272.23 million in June 2021. Of this number, 236.53 million (86.88%) are Muslim. This means the majority of Indonesia's population is Muslim.

Around 20.4 million (7.49%) of Indonesia's population adheres to Christianity. Furthermore, there are 8.42 million (3.09%) who are Catholic.

The number of Indonesian Hindus is 4.67 million or 1.71%. The number of Buddhists is 2.04 million or 0.75%.

Next, 73,020 (0.03%) of Indonesia's population practices Confucianism. There are also 102,510 (0.04%) who adhere to indigenous beliefs.

The province with the largest Muslim population in Indonesia is West Java, with 46.3 million or 97.29% of the total population. This is followed by East Java with 39.85 million Muslims (97.21% of the total population), and then Central Java with 36.21 million Muslims (97.26% of the total population).

There are 30 provinces where the majority of the population is Muslim, or where more than 50% of the population is Muslim. Islam is a minority religion (less than 50%) in only 4 provinces.

According to data from *Worldpopulationreview*, Indonesia had the largest Muslim population in 2021, at 231 million. Pakistan followed in second place with 212.3 million Muslims, and India was third with 200 million Muslims.