Bringing Definition to the Unfinished Task
| In 2011, 52% of the world's population was urban (World Factbook).
| Five countries have more than 500 people groups, with India exceeding 2200.
| Of Iran's 93 people groups, all but eight are least-reached, and all of the eight are expatriate groups.
| 2,001,000,000 individuals live in people groups (5,235) with very few, if any, believers.
| 2080 people groups reside in more than one country, summing to 6,042,000,000 individuals.