This is the third of three reports on the 1974 National Survey of Scientists and Engineers conducted by the Bureau of the Census for the National Science Foundation. It covers geographic characteristics of the almost 1.1 million persons in the National Sample. The data are reported in detailed statistical tables, with additional information provided on the nature of the study. A summary section discusses the data by states and by standard metropolitan statistical areas. Concentration, federal support, field, highest degree, type of employer, primary work activities, and salaries, are described for various geographic locations. (MS)