The most recent dependable estimate lists more than 15,000 individual churches of Christ. The "Christian Herald," a general religious publication which presents statistics concerning all the churches, estimates that the total membership of the churches of Christ is now 2,000,000. There are more than 7000 men who preach publicly. Membership of the church is heaviest in the southern states of the United States, particularly Tennessee and Texas, though congregations exist in each of the fifty states and in more than eighty foreign countries. Missionary expansion has been most extensive since the second World War in Europe, Asia and Africa. More than 450 full time workers are supported in foreign countries. The churches of Christ now have five times as many members as were reported in the U.S. Religious Census of 1936.