2026-06-25 · 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 in a single communion, the largest in Christianity. This grid sets Catholics against every other Christian tradition in equal halves, a snapshot of how much of global Christianity runs through one church.
1 cell = 1.4 million Catholics worldwide (0.1% of global Catholics) · 1,000 cells
Context
A 50% share means the Catholic Church on its own equals all other Christian traditions combined — one institution set against the entire rest of Christianity.
The estimates pair the Vatican's Annuario Pontificio with Pew's Christian sub-group breakdowns, rounded, and reflect 2026 data. The headline total of roughly 1.4 billion Catholics worldwide anchors the grid.
The other half, 'Other Christians,' is an aggregate of many separate bodies rather than one communion — which is why the Catholic Church stands alone as the largest single Christian communion.
Annuario Pontificio / Pew Christian sub-groups, rounded.
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Credit this grid as Inagrid — https://inagrid.com/e/2026-06-25-catholics-pope