Demographics or demographic data are the characteristics of a human population as used in 
government, marketing or opinion research, or the demographic profiles used in such research. Commonly used demographics include sex, race, age, income, disabilities, mobility (in terms of travel time to work or number of vehicles available), educational attainment, home ownership, employment status, and even location.
Distributions of values within a demographic variable, and across households, are both of interest, as well as trends over time.
From: U.S. Census Bureau, on Wikimedia Commons.
Consumer demographics and psychographics are data points that provide information about
who your consumers are and why they purchase things. 
See the resources listed for learning more about consumers, behaviors, attitudes, and opinions.
Image: https://images.app.goo.gl/8ZGwpFmshQ5YJgTE7