ISA Membership by Country

Membership Growth over Time

Data for each year are collected in November/December of that year. Early historical data are based on estimates and available reports.

Membership Data

These data provide information on the scope and diversity of ISA's membership. Please note that this only reflects members for whom data are available. To learn more about ISA's efforts at diversity and representation, please see our Committee on the Status of Representation and Diversity, our Committee on the Status of Women, and our Caucuses.