Christian population growth is the population growth of the global Christian community. According to a 2011 Pew Research Center survey, there were more than 2.2 billion Christians around the world in 2010, more than three times as many as the 600 million recorded in 1910. However, this rate of growth is slower than the overall population growth over the same time period. In 2020, Pew estimated the number of Christians worldwide to be around 2.38 billion. According to various scholars and sources, high birth rates and conversions in the Global South were cited as the reasons for the Christian population growth. In 2023, it was reported: "There will be over 2.38 billion Christians worldwide by the middle of 2023 and around 2.9 billion by 2050, according to a report published by Pew Pew research centre.

Summary

The Christian fertility rate is 2.7 children per woman, which is higher than the global average fertility rate of 2.5. Globally, Christians were only slightly older (median age of 30) than the global average median age of 28 in 2010. According to Pew Research religious switching is projected to have a modest impact on changes in the Christian population. According to various scholars and sources, Pentecostalism is the fastest-growing religious movement in the world; this growth is primarily due to religious conversion to Pentecostal and Charismatic Christianity. According to the World Christian Encyclopedia, approximately 2.7 million converting to Christianity from another religion, World Christian Encyclopedia also cited that Christianity rank at first place in net gains through religious conversion. While according to "The Oxford Handbook of Religious Conversion", approximately 15.5 million converting to Christianity from another religion, while approximately 11.7 million leave Christianity, and most of them become irreligious, resulting in a net gain of 3.8 million. Christianity earns about 65.1 million people due to factors such as birth rate and religious conversion while losing 27.4 million people due to factors such as death rate and religious apostasy. Most of the net growth in the numbers of Christians are in Africa, Latin America and Asia.

Fertility rate

The Christian fertility rate has varied throughout history. The Christian fertility rate also varies from country to country. In the 20-year period from 1989 to 2009, the average world fertility rate decreased from 3.50 to 2.58, a fall of 0.92 children per woman, or 26%. The weighted average fertility rate for Christian nations decreased in the same period from 3.26 to 2.58, a fall of 0.68 children per woman, or 21%. The weighted average fertility rate for Muslim nations decreased in the same period from 5.17 to 3.23, a fall of 1.94 children per woman, or 38%. While Muslims have an average of 3.1 children per woman—the highest rate of all religious groups—Christians are second, with 2.7 children per woman. The gap in fertility between the Christian- and Muslim-dominated nations fell from 67% in 1990 to 17% in 2010. According to a study published by the Pew Research Center in 2017, births to Muslims between the years of 2010 and 2015 made up an estimated 31% of all babies born around the world. By the Pew Research Center's estimates, the Muslim fertility rate and Christian fertility rate will converge by 2040.

Conversion

By branches

Catholic Church

Eastern Orthodoxy

Protestantism

By continent

Africa

Algeria

Benin

Burkina Faso

Burundi

Cameroon

Central African Republic

Egypt

Ethiopia

Libya

Morocco

Nigeria

South Africa

Tunisia

Americas

Argentina

Canada

Mexico

United States

The United States government does not collect religious data in its census. The survey below, the American Religious Identification Survey (ARIS) 2008, was a random digit-dialed telephone survey of 54,461 American residential households in the contiguous United States. The 1990 sample size was 113,723; 2001 sample size was 50,281. Adult respondents were asked the open-ended question, "What is your religion, if any?" Interviewers did not prompt or offer a suggested list of potential answers. The religion of the spouse or partner was also asked. If the initial answer was "Protestant" or "Christian" further questions were asked to probe which particular denomination. About one-third of the sample was asked more detailed demographic questions. Among the Asian population in the United States, conversion into Christianity is significantly increasing among Korean, Chinese, and Japanese. By 2012 the percentage of Christians in these communities was 71%, 31%, and 38% respectively. Data from the Pew Research Center states that, as of 2013, about 1.6 million adult American Jews identify themselves as Christians, most as Protestants. According to the same data, most of the Jews who identify themselves as some sort of Christian (1.6 million) were raised as Jewish or are Jews by ancestry. According to a 2014 study by the Pew Research Center, 19% of those who say they were raised Jewish in the United States, consider themselves Christian. According to Pew Research, Christianity loses more people than it gains from religious conversion. It found that 23% of Americans raised as Christians no longer identified with Christianity, whereas 6% of current Christians converted. This was in contrast to Islam in America, where the number of people who leave the religion is roughly equal to the number who convert to it. The National Catholic Register claims that in 2015 there were 450,000 American Muslim converts to Christianity and that 20,000 Muslims convert to Christianity annually in the United States. According to scholar Rob Scott of University of Tasmania in 2010 there were "approximately 180,000 Arab Americans and about 130,000 Iranian Americans who converted from Islam to Christianity". Religious Self-Identification of the U.S. Adult Population: 1990, 2001, 2008 Figures are not adjusted for refusals to reply; investigators suspect refusals are possibly more representative of "no religion" than any other group. Highlights:

Asia

Afghanistan

Azerbaijan

Bangladesh

China

India

Indonesia

Iran

Israel

Japan

Jordan

Kazakhstan

Kuwait

Kyrgyzstan

Malaysia

Mongolia

Oman

Saudi Arabia

A 2015 study estimates 60,000 Muslims converted to Christianity in Saudi Arabia.

Singapore

South Korea

Syria

Tajikistan

Turkey

Uzbekistan

Vietnam

Europe

Albania

Belgium

Bulgaria

Denmark

France

Georgia

Germany

Kosovo

Norway

Netherlands

Russia

Spain

Sweden

United Kingdom

Oceania

Australia