Wanderlust World Wanderlust World Yes. According to the UN, as of ~2023, approximately 56% of the world's population (4.4 billion) lives in urban areas, projected to reach 68% by 2050. The "two-thirds" figure is a commonly cited approximation for the near future.
A disproportionate share of these cities are coastal: 40% of humanity lives within 100 km of a coast; 13 of the 20 megacities (>10M) are coastal. This concentration drives economic activity but amplifies exposure to sea-level rise, storms, and coastal erosion.