2026-10-15 · Catholics worldwide
Half of Christians are Catholic
Roman Catholicism is the largest single Christian communion.
Half of all Christians are Roman Catholic: about 1.4 billion people as of 2026, the largest single communion in the faith. Decisions made in Rome on doctrine, liturgy, and leadership therefore land on one in every two Christians worldwide.
1 cell = 1.4 million Catholics worldwide (0.1% of global Catholics) · 1,000 cells
Context
The figures pair the Annuario Pontificio, the Vatican's annual statistical yearbook, with Pew Research Center's counts of Christian sub-groups, rounded to keep the focus on the big picture.
The other half of Christianity is spread across many bodies, from Orthodox and Protestant churches to Pentecostal and independent movements, so no other single communion approaches the Catholic share.
The grid collapses that diversity into two bands, Roman Catholic and everyone else, underlining how much of global Christianity sits inside one communion.
Annuario Pontificio / Pew Christian sub-groups, rounded.
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Credit this grid as Inagrid — https://inagrid.com/e/2026-10-15-catholics-pope
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