The 10/40 Window

The 10/40 Window

Into the Heart of the Unreached

The 10/40 Window refers to a geographical rectangle between 10 and 40 degrees north latitude, stretching across North Africa, the Middle East, and much of Asia. This region, though small in comparison to the rest of the world, holds staggering spiritual, cultural, and historical significance.

Datasets

Data Source Credit: All data is provided by Joshua Project, a research initiative highlighting ethnic people groups with the fewest followers of Christ. To view data for a specific continent, region, country, religion, affinity bloc, people cluster, or people group, click the “View Data” link located below each listing. You can also use the search tool to locate your desired dataset or visit the full People Group Lists page.

PDFs & Printable Resources

  • How to Pray for the 10/40 Window
    A rich guide covering prayer insights, key needs, and common questions.
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  • Praying Through the 100 Gateway Cities of the 10/40 Window
    A focused city-by-city guide with prayer points and regional profiles.
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  • 10/40 Window Update: From Mission Field to Mission Force
    An insightful report on trends and shifts in global mission activity.
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  • Pray for the 10/40 Window – HeartCry Missionary Society
    Stories and targeted prayer needs from inside the 10/40 Window.
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Take the next step with curated resources designed to deepen your understanding and involvement in reaching the 10/40 Window.

Tips to Evangelize in the 10/40 Window

Evangelizing here requires wisdom, patience, and genuine love, just as the early Apostles demonstrated in the Book of Acts.

Pray Before You Go

Every mission begins with prayer. The 10/40 Window is a spiritual battlefield, and intercession prepares the ground for the harvest. — Acts 1:14

Understand Their Culture and Beliefs

Cultural sensitivity opens doors that arguments never can. Study and understand the mindset of those you want to reach. — Acts 17:22

Show Love Through Actions

Love is a strong language in the 10/40 Window. In many of these regions, love expressed through compassion speaks louder than any sermon. -Acts 3:6

Be Led by the Holy Spirit

In the 10/40 Window, the Holy Spirit is the true guide of every mission. Without His direction, our efforts may be good—but not fruitful.- Acts 8:29

Use Wisdom and Humility

The 10/40 Window is home to people of deep traditions and strong beliefs. To reach them, we must carry not pride, but wisdom; not argument, but grace. - 1 Cor 9:22

Build Genuine Relationships

Evangelism is not a one-time event, it is a relationship that reveals Christ through trust and consistency. People must see Christ in you before they can receive Christ through you. - Acts 9:27
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