The chart shows where all of the Christians and non-Christians live in the world, including the Unreached and Frontier People Groups. Notice the dark blue section, representing the 25% of the world in Frontier People Groups — living mostly in Muslim majority countries and India.
1 Where the gospel is well known and has had a significant impact. (>2% Evangelical or >5% Christian Adherent)
2 Rom 8:14: God’s children are those led by his Spirit. Estimate based on published figures for Evangelicals, Charismatics and Pentecostals.
3 A group must be both ≤ 2% Evangelical & ≤ 5% Christian Adherent to be Unreached.
These percentages are rounded estimates based on published figures and a world population of 7.8 billion people.