The 2014 revision of World Urbanization Prospects by the United Nations indicates that 54% of the global population lives in urban areas, a figure expected to rise to 66% by 2050, particularly driven by rapid urbanization in Asia and Africa. Key countries, including India, China, and Nigeria, will account for a significant portion of this growth while many urban areas face challenges due to unplanned expansion and inequality. The report emphasizes the need for integrated policies that address the complexities of urban development and the urgency for sustainable solutions in an increasingly urbanized world.