This publication presents data from the current revision of estimates and projections of the size and growth of urban and rural populations for all countries of the world. The publication also contains revised estimates and projections for all urban agglomerations of at least 750,000 inhabitants in 1994. The revisions are part of a series of estimates and projections updated every two years. Chapter 1 analyzes the growth and structure of urban agglomerations, ranking the top 15 cities according to population and discussing the phenomenon of counter-urbanization and the distribution of cities and populations according to class size. Chapter 2 presents levels of urbanization and future trends for urban and rural populations and for developing and developed parts of the world. In Chapter 3, the sources of data that underlie these estimates are listed. The final section contains 17 annex tables that provide detail about urban and rural population characteristics. Eleven figures and 21 tables in the body of the text present population information. (SLD)