Numbers, Facts and Trends Shaping Your World

Religion

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Members of the incoming 119th Congress will be sworn in at the U.S. Capitol on Jan. 3, 2025. (Cynthia Johnson/Getty Images)

Faith on the Hill

Christians will make up 87% of voting members in the Senate and House of Representatives, combined, in the 119th Congress. That’s down from 88% in the last session and 92% a decade ago, but still far exceeding the Christian share of all U.S. adults (62%).

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Key Findings From the Global Religious Futures Project

The Global Religious Futures (GRF) project is jointly funded by The Pew Charitable Trusts and The John Templeton Foundation. Here are some big-picture findings from the GRF, together with context from other Pew Research Center studies.

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America’s Changing Religious Landscape

The Christian share of the U.S. population is declining, while the share of Americans who do not identify with any organized religion is growing. These changes affect all regions in the country and many demographic groups.