This book describes and analyzes growth, change, and spatial patterns in Mexico City, looking at urbanization, population, marriage and fertility, health and mortality, migration, environment and housing, social characteristics, the economy, labor force, and corporate structure. Applying modern techniques of geographic information systems and spatial analysis, the authors reveal many previously unknown or unrecognized trends and patterns. In a capstone chapter, they summarize the spatial patterns in a series of cluster analyses that identify distinctive zones, within the metropolis - a prosperous core, surrounding complex ring patterns, an impoverished zone, and semi-rural arms. They also compare the pattern of Mexico City's cluster zones to the classical and developmental literature on cities. In closing, the authors suggest government policies that would foster optimal future development of an even larger metropolis.