The 10/40 Window

home of the unreached world

The 10/40 Window is a rectangular shaped area on our globe extending from West Africa to East Asia, from 10 degrees to 40 degrees north of the equator.

Nearly 4 billion people live here, including more than 80 percent of the world’s poorest of the poor. Nearly 2 billion in the 10/40 Window have never had the chance to hear the gospel of Jesus Christ—not even once.

The 10/40 Window also encompasses the majority of the world’s Muslims, Hindus, Buddhists and animists.

For a more detailed looks at population, people groups, the 10/40 Window, world religions, Christians, languages, internationals, money and missionaries, see statistics from The Traveling Team.

World’s population live here
people groups unreached live here
world's unreached live here
world’s poor live here
3% of missionaries work here
1% of finances to reach unreached

The great imbalance of missions is the fact that most missionaries go to or are sent to reached areas of the earth—regions where the Church already exists and the name of Jesus is known. On the flipside, there are very few missionaries working among the remaining unreached people groups within the 10/40 Window.

Approximately 2 out of 5 people in our world have never heard of the gospel of Jesus Christ.

Comprising nearly 2.9 billion people, they are the unreached peoples who live in the 10/40 Window.

More about unreached and unengaged people groups

    • In AD 100 there were 360 people for every believer. Now there are 7.3 people for every believer. (Winter et al., 1)
    • In AD 100 there were 12 unreached people groups for every congregation of believers. Now there is 1 unreached people group for every 1000 congregations. (Winter et al., 3)
    • 90% of foreign missionaries work among already reached people groups. 10% work among unreached people groups. (Winter and Koch, 543)
    • Despite Christ’s command to evangelize, 67% of all humans from AD 30 to the present day have never even heard the name of Jesus Christ. (Baxter 2007, 12)
    • 91% of all Christian outreach/evangelism does not target non-Christians, but targets other Christians. (Baxter 2007, 12)
    • In the last 40 years, over 1 billion people have died who have never heard of Jesus, and around 30 million people this year will perish without hearing the message of salvation. (Baxter 2007, 12)
    • 70,000+ people die everyday in the unreached world without Jesus. (Baxter 2007, 12)
    • Of foreign mission funding: 87% goes for work among those already Christian. 12% for work among already evangelized, but Non-Christian. 1% for work among the unevangelized and unreached people. (Baxter 2007, 12)
    • Christians make up 33% of the world’s population, but receive 53% of the world’s annual income and spend 98% of it on themselves. (Barrett and Johnson 2001, 656)
    • Out of 648 million evangelical Christians, 70% have never been told about the 1.6 billion unevangelized individuals in the world. (World Evangelization Research Center)
    • For more sobering statistics on the unreached, click here.

    Matthew 24:14: “And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.” The Greek phrase for “all nations” is “panta ta ethne” which refers to all of the ethnicities or people groups of the world. We believe that Jesus was very clear in stating that his gospel would be preached to all nations / ethne / people groups before he would return. Therefore the simple, yet major goal of global missions is to join with what God is already at work doing, making known the good news to every people group in order to fulfill the words of Christ and see his return.

    Revelation 7:9: “After this I looked, and behold, a great multitude that no one could number, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands.” The apostle John gives us a glimpse of what worship in heaven will look like. The Bible has made it very clear that God will not be satisfied until there are people from every people group represented in heaven.

    Need more scriptures about the unreached? See 500 passages about God’s heart for the nations.


    Most missions organizations have narrowed their focus toward large unreached people groups (populations of 25,000 and above). The reason is simple: it takes a lot of manpower and resources to create impact and see church planting movements happen, so a focus on reaching larger unreached people groups naturally sees bigger results. Sadly, however, thousands of smaller people groups (populations of 25,000 and below) are being overlooked and are still unengaged. So why focus on small unreached people groups? One major reason is that there are more small people groups than there are large people groups. At Within Reach Global, we are trailblazers and pioneers. It thrills us to fill in the gaps of the missions community, going to small unreached people groups that larger organizations cannot or will not target. Some of the ethnic people groups we target have a population of less than 2,000 people. We cannot imagine them slipping through the cracks of evangelistic efforts without a fight. We long to see the beauty of God’s creation as represented through every single unique tribe surrounding the throne in heaven, bringing their own style of worship to their Maker.


    An unreached people group is an identifiable group of people distinguished by a distinct culture, language, or social class who lack a community of Christians able to evangelize the rest of the people group without outside help. The only opportunity for the people group to hear about salvation is through an “external witness.” Most missiologists consider 2% of the population becoming Christ followers as the “tipping point” at which the group is generally considered “reached” with the gospel. Check out this video for a more detailed look.


    An unreached people group is unengaged when there is no church planting strategy, consistent with Evangelical faith and practice, under implementation. There is no church, no missionary, no mission agency, no one who has yet taken responsibility to tell them about Jesus Christ. in this respect, a people group is not engaged when it has been merely adopted, is the object of focused prayer, or is part of an advocacy strategy.

Here’s what we’re doing to make a difference among unreached people groups.

Our outreach centers are reaching unreached peoples both in rural settings and college campuses. We are focused on initial evangelism, discipleship, church planting, and releasing new churches to be independent.

Hold the Ropes

We are looking for people who will join our Monthly Prayer and Financial Support Team by faithfully giving to Within Reach Global, to help us get to the least reached people groups of Southeast Asia. Will you help hold the ropes as we are lowered down into the goldmine of souls?

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