The introduction of digital technologies, the Internet and social media provides new information and data sources for the study of demographic behavior in human life. The paper studies the analysis of demographic characteristics based on e-demographic data. E-demographic system creation is one of the urgent issues for demographic research, the management of demographic processes, and the study of demographic behavior. The paper investigates the existing international experience in the field of e-demography, analyzes the current state of research in the field of creating a single population register. For the creation of an e-demographic system, the integration of public registers in various fields into a single platform through a personal identification number has been proposed. The paper analyzes demographic characteristics based on e-demographic data. In the carried experiment the analyses of demographic characteristics of graduates have been examined who studied abroad. In the paper, we use the K-means algorithm to analyze demographic data. Demographic analysis was conducted according to the age, sex, marital status, education level, specialty, study country and other indicators of the graduates. E-demography creates new opportunities for social research and population data monitoring. The establishment of an e-demographic system will provide the population statistics, online census monitoring, in-depth analysis of demographic processes and the study of demographic behavior (pp.70-82).