0 the number and characteristics of people who live in a particular area or form a particular group, especially in relation to their age, how much money they have and what they spend it on : --
No one has exact demographics on (= information about the quantity and characteristics of the people who live in) the area.
The demographics of the country have changed dramatically in recent years.
1 the number and characteristics of people who live in a particular area or form a particular group, especially in relation to their age, how much money they have and what they spend it on: --
2 the study of people and society in a particular area or particular group, typically used in marketing to decide which products to sell there and how to advertise those products successfully: --