How many Christian churches are in the world?

Answer 1

There are about 7 Billion Christian Churches Around the World .

This answer does not compute. According to the Pew Forum on Religion and Public Life,

A comprehensive demographic study of more than 200 countries finds that there are 2.18 billion Christians of all ages around the world, representing nearly a third of the estimated 2010 global population of 6.9 billion.

The math doesn't work, especially since a 'church' is not a building, but a congregation.

I cannot find numbers on Christian congregations worldwide.

Answer 2

There is only one church of God as Paul called us all.

Answer 3

Hundreds of millions.