Chapter 1. The world's urban and rural population in 1950 and 1960 as nationally defined -- Chapter 2. World urbanization trends as measured in agglomerations, 1920-1960 -- Chapter 3. Alternative estimates and trends derived from "metropolitan area", "urban" and "agglomerated" population concepts, 1920-1960 -- Chapter 4. A tentative assessment of possible future trends -- Annex 1. Composition of major areas by regions and countries -- Annex 2. List of definitions used in the estimation of "urban" population as nationally defined -- Annex 3. Methods used to estimate agglomerated population (localities with 20,000 and more inhabitants), 1920-1960 -- Annex 4. Tables of estimates for individual countries -- Annex 5. Population of big cities and multimillion cities, 1920-1960 -- Annex 6. Tables of estimates and projections for twenty-one world regions.