As of 2014, the country with the largest Christian population in the world is the United States. The countries of Brazil and Mexico take the second and third position, respectively. As of 2010, the total number of Christians around the world was estimated to be 2.18 billion, representing a third of the global population.
In 1910, Europe had the highest population of Christians, with 66.3 percent of the total population being Christian. As of 2014, most of the Christian population is found in the Americas. When Mexico, Brazil and the U.S. are combined, the percentage falls to 24 percent, which is about the same proportion as Africa and Europe. In the U.S., 86 percent of the total population are Christians, a number which has dropped in the last century.
As of 2011, the total number of Christians in the U.S. was estimated to be 150 million, which is 11.3 percent of the total Christians in the world. Protestants take the largest number of the U.S. Christian population followed by Catholics. The state of Utah has the highest Christian population of any state, accounting for 78 percent of its population, while Maine has the least number of Christians, representing 27 percent of its population.