Countries People Want to Leave Most: 2026 Ranking (Gallup) Which Countries Do People Want to Leave Most? A 2026 Ranking. Gallup asked 430,000 people in 149 countries whether they would move abroad permanently if they could. Its Potential Net Migration Index turns those answers into a what-if scenario: how many young people (ages 15–29) each country would lose or gain if every wish came true. Worldwide, 15% of adults, about 900 million people, say they would leave their countr