Pew Research
2025 Executive Summary of 2023-2024 Pew Research Religious Landscape Study and Other Studies (US Only):
https://www.pewresearch.org/religion/2025/02/26/religious-landscape-study-executive-summary/
Religious Landscape Study Summary Page (US Only):
https://www.pewresearch.org/collections/religious-landscape-study/
2007, 2014, 2023-2024 Pew Research Religious Landscape Study Full Data (US Only):
https://www.pewresearch.org/religious-landscape-study/
The Changing Global Religious Landscape Data and Analysis with Projected Futures (Global):
https://www.pewresearch.org/religion/2017/04/05/the-changing-global-religious-landscape/
Older Projected Future Growth of Religions (Global):
https://www.pewresearch.org/religion/2015/04/02/religious-projections-2010-2050/
Older Global Religious Landscape Data and Analysis with Geographic Distributions:
https://www.pewresearch.org/religion/2012/12/18/global-religious-landscape-exec/
Gallup Polls
Specific Polling Answers with Trends Over Time:
https://news.gallup.com/poll/1690/religion.aspx
Topical Gateway to Large Number of Polls, Articles, and Analysis on Religion (US and Global):
https://news.gallup.com/topic/religion.aspx
Discussion of Religiosity and Statistics for Percentages of Different Faiths (US Only):
https://news.gallup.com/poll/358364/religious-americans.aspx
Key Metrics for Human Flourishing Including Religiosity - Data and Analysis
https://news.gallup.com/poll/642680/global-study-aims-uncover-humans-flourish.aspx
Encyclopedia Britannica (with Definitions and Helps)
Compares Numbers of All Notable Religions Globally with Helps and Analysis - Current:
https://www.britannica.com/story/what-is-the-most-widely-practiced-religion-in-the-world
Helpful Definitions and Explanations Regarding the Topic of Religion:
https://www.britannica.com/topic/religion
Principles of Classification of Religions: Normative, Geographical, Ethnographic-Linguistic, Philosophical, Etc.:
https://www.britannica.com/topic/classification-of-religions#ref38028
The Gospel Coalition: TGC
World Religion Basics - Series of Videos - Double Click Videos to Maximize (Content from Our Daily Bread):
https://www.thegospelcoalition.org/course/world-religion-basics/#introduction
Written here by Six Pence Song Saturday March 28th Anno DOMINI 2025 at around 10:30 AM CT