[plural] [noun]Demographics are the quantity and characteristics of the people, esp. in relation to their age, how much money they have and what they spend it on, who live in a particular area.The staggering growth in the sale of rock music cannot be explained by simple demographics.The demographics of the country have changed dramatically in recent years.No one has exact demographics on (= information about the quantity and characteristics of the people who live in) the area.
DEMOGRAPHICS
Meaning of DEMOGRAPHICS in English
Cambridge English vocab. Кембриджский английский словарь. 2012