An estimated 214 million people — about 3% of the world’s population — have migrated across international borders as of 2010. While the percentage may seem small, if the migrants were counted as one nation, they would constitute the fifth most populous country in the world, just behind Indonesia and ahead of Brazil.
Nearly half of these migrants (49%) are Christians, and the top country of origin has been Mexico, followed by Russia and the Ukraine where borders changed after the collapse of the Soviet Union. The second-largest group of migrants are Muslims (27%), among whom the largest share has come from the Palestinian territories, followed by Pakistan, Bangladesh and India.
MORE via Faith on the Move – Pew Research Center.