, in 2010 Women, when in the
labor force, are similar to men in their
religiosity. When out of the labor force, women tend to be more religious. In many countries censuses and demographic surveys do not separate atheists, agnostics and those responding "nothing in particular" as distinct populations. In 2020, of the global atheist and non-religious population, 78% live in Asia and the Pacific, while the remainder reside in Europe (10%), North America (6%), Latin America and the Caribbean (4%), sub-Saharan Africa (1.5%) and the Middle East and North Africa (.1%). Eleven countries have nonreligious majorities. In 2020, the countries with the highest percentage of "Non-Religious" ("Term encompassing both (a) agnostics; and (b) atheists") were
North Korea, the
Czech Republic and
Estonia. According to the 2018 Chinese General Social Survey, China had the largest count of unaffiliated people: about one billion adults. According to Pew Research in 2025, China alone makes up 67% of the global religiously unaffiliated demographic. Some broadly religious practices continue to play a significant role in the lives of a substantial shares of the Chinese population. Yet, 47% of atheists who live in those countries are still formally members of the national churches. In much of
East Asia, ritual behavior holds greater salience than belief. In the United States, the majority of the "Nones", those without a religious affiliation, have belief in a god or higher power, spiritual forces beyond the natural world, and souls. Even 23% of self-identified atheists believe in a
higher power, but not a god as described in the bible. A 2024 report by Pew on Hong Kong, Japan, South Korea, Taiwan and Vietnam found that though many in those countries are not affiliated with any religion, many of the unaffiliated still have beliefs in gods or unseen beings and engage in religious practices. Secular people are complex and not always devoid of religious or spiritual involvement. They persist in various forms of religiosity and spirituality. "Secular churches" or "atheist churches" such as
Sunday Assembly and others have emerged in multiple countries (e.g. USA, Britain, Australia) which deal with community needs that religious services often provide. Atheists are diverse with some engaging spiritual practice and others having strong beliefs in that they seek to evangelize to others.
Nontheistic religions such as Buddhism, Jainism, along with atheistic schools in Hinduism, and other Indian schools like Carvaka, Ajivika have played a significant part in Asian cultures for millennia. In the Czech Republic, one of the most secular countries in the world, most nonbelievers are not atheists but are more religious skeptics fulfill their spiritual needs outside of traditional religion. In 2014,
Zuckerman, Galen and Pasquale estimated there were 400 million nonreligious or nontheistic people. These estimates come from the
International Social Survey Programme 2008 survey in which 40 countries took part. In 2010, the religiously unaffiliated numbered more than 1.1 billion (around 1,126,500,000 persons), about one-in-six people (16.3% of an estimated 6,9 billion
world population), according to
Pew Research Center. A 2015 WIN/Gallup International poll found that 63% of the globe identified as a religious person, 22% as not a religious person, and 11% as "convinced atheists". Their 2016 survey found that 62% of the globe identified as a religious person, less than 25% as not a religious person, 9% others as "convinced atheists" and 5% others "Do not know/no response". Inverse association between
intelligence and religiosity, and the inverse correlation between intelligence and
fertility might lead to a decline in non-religious identity (contra-secularization hypothesis) in the foreseeable future. In 2007, sociologist
Phil Zuckerman's global studies on atheism have indicated that global atheism may be in decline due to irreligious countries having the lowest birth rates in the world and religious countries having higher birth rates in general. A Pew 2015 global projection study for religion and nonreligion, projected that between 2010 and 2050, there will be some initial increases of the unaffiliated followed by a decline by 2050. Some theorists think religion will fade away but Pew reveals a more complicated picture. By 2060, Pew says the number of unaffiliated will increase by over 35 million, but the overall population-percentage will decrease to 13% because the total population will grow faster. This would be mostly because of relatively
old age and
low fertility rates in less religious societies such as
East Asia, particularly
China and
Japan, but also
Western Europe. Being nonreligious is not necessarily equivalent to being an atheist or agnostic. Many of the nonreligious have some religious beliefs. ==Historical trends==