The majority of the people living in Bolan district belong to the Sunni sect of Islam. A smaller part, most of which lives in Mach, belongs to the Shia sect of Islam. Hindus are living in Bolan district as well, mostly in Bhag sub-division.

The two major festivals observed are Eid-Fitr and Eid-Azha. They are occasions of great jubilation and joy. The other festivals are Eid-Miladuld Nabi, Sab-e-Barat and Muharam. The Hindus observe Diwali and Holi.

The population of Bolan district, as observed and interviewed, is less religiously conservative compared to the Pashtu speaking belt. The observation of fast during Ramadan is not regular. Two factors are accountable: a lack of religious rigidity and the very hot summers. The main indicators are less attendance in mosques, routine prayers, and less religious knowledge. There is a respect for Pirs (religious bigwigs) and Syeds amongst the Sindhi speaking population. Syeds, decedents of the Holy Prophet (peace be upon Him) are treated with a respect.

The incidence of religious conflicts is small. There are fewer cases of sectarian violence than family or tribal violence. Still, following the Ayodhya incident in India in 1991 after the Babri mosque was desecrated, Hindus were killed and temples in Bhaq were damaged. The anti-Hindu riots pose a serious threat to the peaceful co-existence of Hindus and Moslims in Bolan, since 1947.

There is a large number of shrines (ziarat) that people pay homage to, particularly on Thursday nights. The most important shrines are Daloo Baba ,75 km from Dhadar, Bibi Nani (also a picnic spot), Pir Dupasi, Sikander Shah Baba at Dhadar, Pir Shabir Shah at Bhag, Pir Sufan Shah at Bhag, and Pir Izat Shah Mithri.