Demographics on national, regional, and global Pentecostalism provide an essential backdrop to almost every kind of quantitative or qualitative study done on other aspects of Pentecostalism. This article outlines both the history and the research findings related to the subject of defining, categorizing, and counting Pentecostals. Subjects covered include early attempts to count Pentecostals, the development of taxonomies of different types of Pentecostals and Charismatics, and statistical estimates of Pentecostals and Charismatics by type.
The following tables represent the results of analysis of data on religion for all of the countries of the world which appear in the World Religion Database (). These data are collected at the national level from a number of sources including censuses, surveys, polls, religious communities, scholars, and others.
This article offers analysis of religious affiliation for 18 categories of religion for the globe and six continents: Africa, Asia, Europe, Latin America, Northern America, and Oceania. Estimates of religious affilia¬tion are made for four dates, 1970, 2000, 2018, and projections for 2030. Annual average growth rates are provided for two 30-year periods, 1970–2000 and 2000–2030. These global and continen¬tal tables are aggregated from country data in the World Religion Database.