01
Why it matters
It is a useful prayer lens, but not a boundary around God’s mission. Need, migration, and opportunity exist both inside and outside the window.
02
Nations in the 10/40 Window
Profiled nations whose centre lies between 10° and 40° north, from West Africa to East Asia. Borders are approximate; the window is a planning tool, not a line on the ground.
| Nation | Christian share | Gospel access |
|---|---|---|
| Afghanistan | 0.02% | Frontier |
| Algeria | 2% | Less-reached |
| Bangladesh | 0.5% | Unreached |
| China | 7% | Unreached |
| Egypt | 10% | Less-reached |
| India | 2.4% | Unreached |
| Iran | 0.5% | Frontier |
| Iraq | 0.4% | Unreached |
| Japan | 1.5% | Unreached |
| Libya | 1.5% | Frontier |
| Mali | 2.5% | Unreached |
| Morocco | 0.1% | Frontier |
| Myanmar | 6% | Unreached |
| Nepal | 2.5% | Less-reached |
| Pakistan | 1.8% | Unreached |
| Philippines | 90% | Reached |
| Qatar | 14% | Unreached |
| Saudi Arabia | 4% | Frontier |
| South Korea | 29% | Reached |
| Sudan | 5% | Unreached |
| Syria | 2.5% | Unreached |
| Thailand | 1.2% | Unreached |
| Türkiye | 0.2% | Frontier |
| Vietnam | 8% | Less-reached |
| Yemen | 0.1% | Frontier |
FAQ
Related questions
Who coined the term 10/40 Window?
Mission strategist Luis Bush popularised it in 1990.