Demographic/ˌdeməˈɡræfɪk/ Definition 1 of 2Pro Tip 1/3Market Focus Marketers use 'demographic' to describe a market segment they target with ads. Our new product appeals to the millennial demographic. Pro Tip 2/3Not Individuals 'Demographic' refers to a large group, not a single person. People over sixty-five make up a growing demographic. Pro Tip 3/3Societal Changes Use 'demographic' to discuss societal changes like birth rates or migration patterns. The city's demographic has shifted due to urbanization.