We have all religions of the world in India that exist anywhere in the world. However, the main religions are Hindus, Muslims, Christians, Sikh, Jain, Boudh, Jew, Persian, etc. We speak over 3000 languages here and we have 22 gazeted official languages in India. You will be surprised to know that few of our 30+ states are Christian majority states. If you search my home state Goa, you will see some of the best churches and sea beaches exist in this state.

https://en.wikipedia.org/wiki/Goa