This report provides nationwide data on the salaries of members of the American Institute of Physics Member Societies for 1990. The report opens with a discussion of variations in doctorate salaries by geographic location. Data are presented for broad regions of the country, as well as for several states and individual cities. Compensation rates and salary structures in all major sectors of the economy that employ doctorate-level members are also described. The sectors include industry, government, national laboratories, and universities. Given that a large percentage of society members are academics, special attention is paid to how salaries vary throughout an academic career. In later sections, compensation patterns among master's and bachelor's degree holders are discussed, focusing primarily on variations by years of experience and employment sector. The final two sections of the report describe differences in doctorate salaries by primary work activity and sex. (GLR)