Irreligion, which may include deism, agnosticism, ignosticism, anti-religion, atheism, skepticism, ietsism, spiritual but not religious, freethought, anti-theism, apatheism, non-belief, pandeism, secular humanism, non-religious theism, pantheism, panentheism, and New Age, varies in the countries around the world.
According to reports from the WIN/Gallup International's (WIN/GIA) four global polls: in 2005, 77% were a religious person and 4% were "convinced atheists"; in 2012, 23% were not a religious person and 13% were "convinced atheists";[2] in 2015, 22% were not a religious person and 11% were "convinced atheists";[3] and in 2017, 25% were not a religious person and 9% were "convinced atheists".[4]
In 2010, the religiously unaffiliated number 1.1 billion (about one-in-six people or 16% of the 6.9 billion population at the time), according to Pew Research Center.[5][6][7]: 24 This "include atheists, agnostics and people who do not identify with any particular religion in surveys"; of that overall category, many may still hold some religious beliefs and some engage in religious practices as well.[6]
In 2006, according to sociologist Phil Zuckerman, broad estimates of those who have an absence of belief in a god range from 500 to 750 million people worldwide.[8] According to sociologists Ariela Keysar and Juhem Navarro-Rivera's 2013 review of numerous global studies on atheism, there are 450 to 500 million positive atheists and agnostics worldwide (7% of the world's population) with China alone accounting for 200 million of that demographic.[9][citation needed] In 2004, relative to its own populations, Zuckerman ranks the top 5 countries with the highest possible ranges of agnostics and atheists: Sweden (46–85%), Vietnam (81%), Denmark (43–80%), Norway (31–72%), and Japan (64–65%).[10][11]
A 2023 Gallup International survey found that Sweden was the country with the highest percentage of citizens that stated they do not believe in a god.[12]
Zuckerman
was invoked but never defined (see the help page).