What's the noun for demographical? Here's the word you're looking for.
demographic
(The addition of quotations indicative of this usage is being sought): A demographic criterion: a characteristic used to classify people for statistical purposes, such as age, race, or gender.
A demographic group: a collection of people sharing a value for a certain demographic criterion.
(The addition of quotations indicative of this usage is being sought): An individual person's characteristic, encoded for the purposes of statistical analysis.