The 10/40 Window is the rectangular area of North Africa, the Middle East and Asia approximately between 10 degrees north and 40 degrees north latitude. The 10/40 Window is often called “The Resistant Belt” and includes the majority of the world’s Muslims, Hindus, and Buddhists. The original 10/40 Window included only countries with at least 50% of their land mass within 10 and 40 degrees north latitude. The revised 10/40 Window includes several additional countries that are close to 10 or 40 degrees north latitude and have high concentrations of unreached peoples.There are over seven billion people alive in the world today, and almost two-thirds of them live in the 10/40 Window.
Approximately 4.89 billion individuals residing in approximately 8,181 distinct people groups are in the revised 10/40 Window. 5,587 (68.3%) of these people groups are considered unreached and have a population of 3.02 billion. This means approximately 62% of the individuals in the 10/40 Window live in an unreached people group. The 10/40 Window is home to some of the largest unreached people groups in the world such as the Shaikh, Yadava, Turks, Moroccan Arabs, Pashtun, Jat and Burmese.There are hundreds of millions of people in our world who will live their entire lives having never met a Christian, never hearing the Gospel, and never hearing the name of Jesus even once prior to their death and nearly all of these live in the 10/40 Window.
The 10/40 Window is home to the majority of the world’s unevangelized countries. The “unevangelized” are people who have a minimal knowledge of the gospel, but have no valid opportunity to respond to it. While it constitutes only one-third of earth’s total land area, nearly two-thirds of the world’s people reside in the 10/40 Window. The original 10/40 Window included only countries with at least 50% of their land mass within 10 and 40 degrees north latitude. The revised 10/40 Window removes several Christianized countries such as South Korea and the Philippines and includes several additional countries, such as Indonesia, that are close to 10 or 40 degrees north latitude and have high concentrations of unreached peoples.
An estimated 3.02 billion individuals live in approximately 5,587 unreached people groups in the 10/40 Window. The 10/40 Window also contains the largest unreached peoples over one million in population. In addition, the 10/40 Window contains the overwhelming majority of the world’s least evangelized megacities — that is those with a population of more than one million. The top 50 least evangelized megacities are all in the 10/40 Window! That fact alone underscores the need for prioritizing 10/40 Window Great Commission efforts.
The 10/40 Window contains four of the world’s dominant religious blocs. The majority of the followers of Islam, Hinduism, and Buddhism as well as the Non-Religious block live within the 10/40 Window. On the left side or western part of the 10/40 Window, the Muslim world can be seen most prominently in a wide band across the north of Africa into the Middle East. South Asia, in the middle of the 10/40 Window, is the heart of Hinduism with its 330 million gods. Buddhism influences the right side or eastern part of the 10/40 Window. Buddhism is the primary religion in Southeast Asia and although officially an atheistic country since the Marxist revolution of the late 1940s, China is nevertheless deeply influenced by its Buddhist roots.
Additional Thoughts to Ponder:
Eighty-six percent of the Buddhists, Muslims and Hindus in the world will live their entire lives and die without ever meeting a Christian, and the vast majority of these lives in the 10/40 Window.