Data Source: Joshua Project API (joshuaproject.net) Last Updated: December 23, 2025 Coverage: 16,382 people groups across 238 countries and 7,134 languages Methodology: Data fetched via API v1, enriched with country and language metadata, and optimized for browser visualization.
The Joshua Project tracks ethnolinguistic people groups worldwide to identify where the Christian gospel has limited access. "Unreached" groups are defined as having less than 2% evangelical Christian population.