Demographic examples in real life

What is a real life example of demography?
Common demographic examples include age, gender, income, education, and religion.
You can easily collect demographic information like this using a survey._{Aug 2, 2019}.
What is the example of demographic?
A demographic refers to distinct characteristics of a population.
Researchers use demographic analysis to analyze whole societies or just groups of people.
Some examples of demographics are age, sex, education, nationality, ethnicity, or religion, to name a few..
While most surveys will never use them all, there are 15 demographic questions considered standard: Age, Gender, Ethnicity, Education, Employment, Location, Marital Status, Sexual Orientation, Household Income, Language, Birthplace, Voting Status, Family/Dependents, Religion, and Political Affiliation.

What is a real life example of demography?