This document, one of the series of United States Current Population Reports, is also a part of a series of "country statements," prepared as background material for the World Population Conference held in August 1974, which describe the demographic situations of approximately 57 cooperating countries. The population situation is presented as a matrix of interrelated elements, reflecting an awareness of the close relationship between social and economic development and population trends. The document is divided into six chapters: (1) Population Growth--an overview; (2) Components of Population Growth--birth, death, and migration; (3) Population Composition--age and sex structure; marital status; families, households, and living arrangements; literacy, education, and school enrollment; and national origin, race, and religion; (4) Population Distribution and Internal Migration; (5) The Labor Force--social and demographic characteristics and breakdowns by occupation, industry, and income; (6) Demographic Projections of the above elements of population; and (7) Summary and Socioeconomic Implications of the population trends. A bibliography concludes the document. (JH)