| 10 of Sudan's 162 people groups have Christianity as their primary religion, and 130 have Islam as their primary religion. |
| The United States, China, Brazil and Nigeria have the greatest number of evangelicals according to Operation World 2010. Kenya has the highest percent evangelicals at 48.9%. |
| Nearly one third (2.4 billion individuals) of the earth's population reside in only 250 Least-Reached people groups. |
| There are six Least-Reached people groups each over 50,000,000 in population, the largest being the Shaikh of Bangladesh (138,300,000). |
| The four largest Least-Reached people groups are the Shaikh of Bangladesh, Japanese of Japan, the Shaikh of India, and the Brahmin of India. |
| The largest Least-Reached group in Central Asia without Scripture, Jesus film, or audio recordings is the Aimaq of Afghanistan, with 1,525,000 people. |
| The largest Least-Reached group in the Middle East / North Africa without Scripture, Jesus film, or audio recordings are the Chenoua of Algeria, with 96,000 people. |
| The largest Least-Reached group in Southeast Asia without Scripture, Jesus film, or audio recordings is the Brunei Malay, Kedayan of Malaysia, with 367,000 people. |
| The largest Least-Reached group in Northeast Asia without Scripture, Jesus film, or audio recordings is the Guibian Zhuang of China, with 1,094,000 people. |
| Russia has 70 Muslim people groups, the largest of which is the Tatars, with 5,341,000 people. |
| France has 32 Muslim people groups, the largest of which is the Kabyle Berbers, with 717,000 people. |
| The Mumbai district of Maharashtra state in India has over 10,000,000 residents, more than many countries of the world. |
| South Asia has nearly five times as many unreached people groups (3,436) as any other region of the world. |
| East and Southern Africa is the least urbanized (31%) region of the world. (World Factbook 2011) |
| 11.4% of the world's population (878m individuals) resides in 31 large Frontier people groups. Frontier groups are those with no more than one Christian per 1,000 individuals, and require pioneering missionary work. |
| More than 950 church planting movements have been reported in the world today, 2019. |
| If the India state of Uttar Pradesh were a country, it would be the 5th most populous in the world. (Operation World 2010). |
| In 2018, 55% of the world's population was urban (United Nations). |
| The top 10 countries with the largest Christian populations include all of the "BRIC" countries (Brazil, Russia, India and China). (Operation World 2010) |
| Iran is the country with the fastest growing Evangelical population at 19.6% annual growth. (Operation World 2010). |
| Of the 8,050 groups whose populations are under 10,000, the total number of individuals is less than 24,000,000. |
| 351 of the 542 people groups in China do not have even Bible portions available in their primary language. |
| Indonesia has the greatest population of Muslim groups (238,000,000), followed by Pakistan (202,000,000) and India (181,000,000). |
| 2,123 people groups in the world do not have Scripture portions or audio recordings available in their primary language, comprising 160,652,000 individuals. |
| 1,907 people groups in the 10/40 Window have neither Scripture portions or the Jesus film available in their primary language, comprising 207,370,000 individuals. |
| 3,436 people groups in South Asia are least-reached, totaling 1,708,000,000 individuals. |
| 366 people groups in Central Asia are least-reached, totaling 264,000,000 individuals. |
| South Asia has the most people groups (3,858), followed by West and Central Africa (2,224), and Central Asia has the least (536). |
| The median population of all people groups for which Joshua Project has population values is 12,000. The mean population is 450,415. |
| The largest people cluster is the Chinese (1,354,000,000), followed by the Hindi (372,000,000), and then Hispanic (362,000,000). |
| Nearly 1/4 of the world's population resides in Frontier people groups, those groups with no more than one Christian per 1,000 individuals. These groups require pioneering missionary effort. |
| Only 60 people groups comprise 50% of the world's population. |
| Of Nigeria's 541 people groups, 104 do not have Bible portions, the Jesus film, or gospel recordings available in their primary language, or 1,727,000 individuals. |
| Central Asia has only 1,388,000 evangelicals, followed by North Africa and Middle East (5,648,000) and Eastern Europe and Eurasia (6,397,100). |
| Census data (2011) indicates there are some 20,833,000 Sikhs in India, and 4,452,000 Jains. |
| Northeast Asia has the highest number of individuals practicing Animism (68,500,000), followed by East and Southern Africa (47,000,000). (Operation World 2010) |
| 3/4 of the 20,833,000 Sikhs in India live in the state of Punjab. Nearly 3/4 of the 8,870,000 Buddhists in India live in the state of Maharashtra. |
| The unreached Parsee, found in 12 countries with over 163,000 in total, practice Zoroastrianism. |
| Five countries have more than 500 people groups, with India exceeding 2500. |
| There are 1,387 primarily Christian groups in the 10/40 Window, the largest being the Yoruba of Nigeria (34,360,000). |
| The largest Muslim people group is the Shaikh of Bangladesh, population 138,000,000. |
| The largest Hindu group is the Brahmin of India, population 59,900,000. |
| The largest group without even Scripture portions in their primary language is the Jin Chinese of China, population 63,000,000. |
| 25 of the 72 people groups in Afghanistan do not have even Bible portions available in their primary language. |
| There are an estimated 460,000 villages (out of a total of 650,000 villages) in India with no known Christian presence. |
| South Asia has the most least-reached people groups (3,436), followed by Southeast Asia (706). Australia and Pacific has the fewest at 55. |
| Hindi is spoken as the primary language by 602 people groups, with English spoken by 541 and Bengali spoken by 401. |
| 11,551 people groups have at least the New Testament available in their primary language, totaling 6,948,521,000 individuals. |
| 3,190,000,000 individuals live in people groups (7,101) with very few, if any, believers. |
| The 22nd Edition of the Ethnologue indicates there are 7,111 languages in the world, with roughly 1/5 in danger of not surviving. 23 languages account for more than half the world's population. |
| 2,391 people groups totaling 136,000,000 individuals have neither Scripture, the Jesus film, or Christian recordings available in their primary language. |
| North America and the Caribbean have the most Evangelicals (100,500,000), followed by East and Southern Africa (100,100,000). (Operation World 2010) |
| There are 928 Muslim majority people groups over 100,000 in size. |
| There are 731 Hindu majority people groups over 100,000 in size. |
| There are 133 Buddhist majority people groups over 100,000 in size. |
| There are 1,272 Christian majority people groups over 100,000 in size. |
| The Muslim Shaikh have a combined population of over 239,100,000 (Bangladesh, Pakistan, India, Nepal). |
| The Mandarin Chinese have a combined population of over 870,000,000 (all countries of residence). |
| The Gond of India speak 109 languages, and the Rajput speak 96. |
| Evangelicals are growing at an annual rate of 2.6%, compared to Islam at 1.9% and Hinduism at 1.2% (Operation World 2010) |
| The global annual growth rate of Christianity in general is 1.2%, but the growth rate of Evangelicals is 2.6% (Operation World 2010) |
| The Nai of India have 93 alternate names, and the Kalal have 86 alternate names. |
| Some 65-70% of the world's population live in religiously restrictive countries. |
| 2,077 people groups reside in more than one country, summing to 6,441,930,000 individuals. |
| 10,993 people groups have the Jesus Film in their primary language, totaling 7,125,000,000 individuals. |
| Indonesia has the most people groups (479) whose primary language does not have Bible portions, totaling 12,978,000 individuals. |
| China has the largest number of individuals whose primary language does not have Bible portions (104,391,000 individuals). |
| Nigeria has 294 people groups (8,834,000 individuals) whose primary language does not have Bible portions available. |
| India has 2,311 least-reached groups, followed by China (445), and Pakistan (414). |
| Of India's 2,585 people groups, 1,502 have populations over 10,000, the largest being a Muslim group, the Shaikh at 86,913,000. |
| Papua New Guinea has the largest number of groups whose primary religion is Christianity (802), followed by Indonesia with 373. |
| India has the largest number of groups whose primary religion is Islam (400), followed by Pakistan with 338 and Indonesia with 254. |
| The United States has the largest population of groups whose primary religion is Christianity (307,000,000), followed by Brazil (210,000,000). |
| All but four small groups of Sri Lanka's 173 people groups have at least Bible portions available in their primary language. |
| 479 of Indonesia's 785 people groups do not have even Bible portions available in their primary language. The largest of these is the Mandailing, 1,228,000. |
| Of Iran's 95 people groups, all but 10 are least-reached, and all of these 10 are expatriate groups. |
