The term "sociodemographic" refers to a group defined by its sociological and demographic characteristics. Sociodemographic groups are used for analyses in the social sciences as well as for marketing and medical studies.
Demographic characteristics can refer to age, sex, place of residence, religion, educational level and marital status. Sociological characteristics are more objective traits, such as membership in organizations, household status, interests, values and social groups. A group based on both sociological and demographic traits, such as people under 30 years of age who are interested in environmentalism, is an example of a sociodemographic group. Studies that divide people into groups by education, relative income, ethnicity and gender are considered sociodemographic studies.