Living in Germany and over 25 years old, this document summarizes the potential audience sizes on Facebook and Instagram for campaigns targeting graduates of the top 10 ranked universities in Germany. It notes limitations in the data including inaccuracies from duplicate or outdated user profiles. Approximately 30,000 to 60,000 users on each platform are potentially targetable for each of the top 10 universities, with some variability possible depending on the specific targeting approach used. The purpose is to provide an indication of potential audience sizes to recruiters and educational organizations for campaign planning.