Although knowledge of how the population of an area is structured and how it is constantly changing will not solve problems created by the changes, it will provide a basis for understanding the needs of an area and for better program planning. Population processes that produce growth or decline in areas include natural increase, migration, and…

Demographic data based on the U.S. census of 1980 are presented and compared to data from the 1970 census. A series of charts, maps, graphs, and tables provide detailed statistical data on such things as population growth trends, population by race and age, educational achievement, number of people living alone, male and female occupations,…