Audience Intelligence Glossary
Audience size is the estimated number of people who show sustained interest in an entity within a defined market. It is the denominator under almost every other audience metric — and it is an estimate, not a count.
Three numbers are routinely used as if they were interchangeable. They are not, and the difference decides whether a budget is sized correctly.
No method observes an entire population. Panel-based research measures a sample of a few thousand and projects it onto the population; behavioral methods observe far larger volumes of activity but have to infer how many distinct people produced it. Both approaches carry error, and neither produces a headcount.
The useful question is not "is this number exact?" — it is not — but "is it built the same way for every entity I am comparing?" Consistency across entities matters more than precision on any single one.
An entity does not have one audience size; it has one per market. A brand can be the third-largest in its category in Germany and effectively absent in Spain, and an average across both hides exactly the fact a decision depends on. Rascasse computes audience size per country for this reason, across 31 built-out markets, and never averages one market's figure into another's.
Audience size per country sits at the top of every profile — for instance Tesla in the United States, alongside the demographic split it is calculated on.