Kollappally is home to a diverse and harmonious population, primarily comprising Christians and Hindus.
* **Christianity:** The region has a significant Syro-Malabar Catholic population. Local parishes serve as spiritual and community hubs, organizing weekly gatherings, Sunday schools, and charitable activities. * **Hinduism:** Ancient local temples dedicated to deities like Shiva, Vishnu, and Bhagavathi play a central role in the spiritual lives of the Hindu residents. * **Harmony:** The village is celebrated for its peaceful coexistence, with neighbors often participating in or supporting each other's religious festivals and community milestones.