Demographic data is information about the age, gender, income, education level, and other characteristics of a population. Demographic data is often collected through methods such as surveys or census data, and can provide valuable insights into the composition and characteristics of a population. Demographic data is used in a wide range of fields, including marketing, public health, and social science research. For example, demographic data can be used to understand the needs and preferences of different population groups, and to develop targeted marketing campaigns or public health interventions. In UX (user experience) research, demographic data can provide important information about the characteristics of the users of a digital product or service, and can help researchers to understand how these characteristics may impact the user experience. By collecting and analyzing demographic data, UX researchers can gain a better understanding of the users of a digital product or service, and can use this information to inform the design of digital products and services.