Rhenock is inhabited by the people of different ethnic groups such as Lepchas, Bhutias, Nepalis (Gorkhas), Biharis and Marwaris. Lepcha tribes who were early settlers have their own unique culture. Originally followers of Shamanism religion, later became the followers of Buddhism. Some of them are the followers of Christianity. Bhutias are another group tribes who are the followers of Buddhism also have their own identity & culture. Majority of the people are Indian Nepalis also known as Gorkha. Most of them are the Hindus by religion. Some of the Nepalis Gurung After 1990 became Buddhist, before that they were followers of Hinduism. Some others are the followers of Christianity. In spite of above all every one respects others belief and faith and celebrates others' festivals which makes a peaceful and prosperous society.