The advancement of technology has greatly changed the world, and social media has become an integral part of the daily lives of a large number of people, serving as a source of information and a means of connecting with others. Generation Z, or so-called zoomers, are young people born between 1995 and 2010 and are unique in that they are the first generation to grow up with social media, using them from an early age, either actively or passively, for entertainment, obtaining information, or education. Like the rest of the population, members of Generation Z differ in demographic characteristics such as gender, place of residence, employment status, monthly income, and so on. This thesis will define individual demographic characteristics and the most well-known social media platforms, attempting to answer the question of how the demographic characteristics of Generation Z influence their active and passive presence on social media. After reviewing professional literature and official online sources for the theoretical part of the study, a survey was conducted with 170 voluntary participants to investigate demographic characteristics and habits of using social media. The research results showed that the selected sample of participants primarily uses social media for entertainment, with Instagram being their favorite platform. The survey revealed that the majority of respondents use social media passively, rarely posting their own content and mainly browsing content created by others.