These SIOP membership statistics are based on the SIOP year which ended June, 30, 2020. Please check back for a brand new membership statistics dashboard coming soon!


Gender - 47.72% male, 52.27% Female, .01% prefer not to disclose

Age Group    

Member Type   

Major Field of Study

    International Membership

Map of US membershipUSA Membership

These membership demographics are provided by the SIOP Membership Analytics subcommittee.  To request additional demographic information about SIOP members, please contact the committee at

To view SIOP's Membership Data Governance Policy, please visit the Governance page.