97% of South Sumatra's population was Muslim in June 2021.

Based on data from the Directorate General of Population and Civil Registration (Dukcapil) of the Ministry of Home Affairs, the population of South Sumatra (Sumsel) reached 8.49 million in June 2021. Of this number, 8.25 million (97.17%) are Muslim. This is the largest number compared to other religious adherents.

There are 81,820 inhabitants of the province, known as Bumi Sriwijaya, who are Christian, 67,600 (0.8%) are Buddhist, 49,810 (0.59%) are Catholic. There are also 40,590 (0.48%) who practice Hinduism, 77 (0.0%) who practice Confucianism, and 78 (0.0%) who adhere to indigenous beliefs.

Based on gender, 4.33 million (50.97%) of the population in the province with Palembang as its capital are male, and 4.21 million are female.

Furthermore, according to marital status, 4.21 million (49.62%) of Sumsel's population are married, and 3.95 million (46.58%) are unmarried. There are also 250,960 (2.96%) who are widowed, and 71,560 (0.84%) who are divorced.

South Sumatra is one of the provinces located on the island of Sumatra, with an area of 91,592 square kilometers and a population density of 93 people per square kilometer. Administratively, Sumsel is divided into 13 regencies and 4 cities, with 241 sub-districts comprising 2,853 villages and 386 urban villages.