Audience demographics
Audience demographics describe who follows a creator: age bands, gender split, top countries and cities. They are not public; only the creator's own analytics expose them, which is why credible platforms show demographics solely on consented, claimed profiles. Demographic fit routinely matters more than size — reach in the wrong country is decoration.
Worked example
A UK brand checks a candidate's consented data: 61% UK audience clears the bar their 40%-threshold policy sets.
Related: Engagement rate · Fake followers
Full context in the guides, or measure it yourself with the free tools.