That checks out - regarding Christian Denominations... according to several authoritative sources that document religious demographics and statistics online to include Pew Research and Statista.com
Top 3 Largest National Christian Populations
About half of all Christians live in just 10 countries. The top three are the United States, Brazil, and Mexico:
United States - 246,780,000 (79.5% of the Population)
Brazil - 175,770,000 (90.2% of the Population)
Mexico - 107,780,000 (95% of the Population)
Number of Christian Denominations
According to the Center for the Study of Global Christianity (CSGC) at Gordon-Conwell Theological Seminary, there are approximately 41,000
Christian denominations and organizations in the world today. This statistic takes into consideration cultural distinctions between denominations in different countries, so there is an overlapping of many
denominations.
Major Christian Traditions
Roman Catholic - The
Roman Catholic Church denomination is the largest Christian group in the world today with more than a billion followers constituting about half of the world's Christian population. Brazil has the largest number of Catholics (134 million), more than in Italy, France, and Spain combined.
Protestant - There are approximately 800 million Protestants in the world, comprising 37% of the global Christian population. The United States has more Protestants than any other country (160 million), which is about 20% of the worldwide total number of Christians.
Orthodox - Approximately 260 million people worldwide are Orthodox Christians, comprising 12% of the global Christian population. Nearly 40% of Orthodox Christians worldwide live in Russia.
About 28 million Christians worldwide (1%) do not belong to one of these three largest Christian traditions.
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