Which country is the most religous?

I suspect its the ones that are the most poverty stricken, India, Bangladesh, Pakistan, Somalia and Ethiopia.

Vatican City would have to be yet as it's tun by the Church it's somewhat of an exception.

India would probably have the most pervasive religious reach into everyday life.

Ethiopia is uniquely religious in that the majority of the people are voluntarily devoted to their own religion despite there being several faiths there.

Until recently, the Pitcairn Islands were 100% SDA but whether they could be counted as religious or not may be another matter.

I would say the Theocracy countries like Iran and Vatican City. But also, Saudi Arabia is pretty religious.

Probably its Muslim countries, it can be Saudi Arabia where More than 3 Millions go to Hajj to Perform Pilgrimage in Mecca..

Probably Vatican City. Pretty much 100% Catholic.

you can say: the middle east as whole. Muslims, Christians and Jews pray not far from each other.

we all worship the Creator.

Vatican City

Its a tie between Niger and Bangladesh.

Vatican City.