Marketing Research and Insight Glossary

Definitions, common uses and explanations of 1,500+ key market research terms and phrases.

What is Reach (advertising)?

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Reach (advertising) Definition

The percentage of the target audience exposed to an ad at least once during a defined period of time.

Reach in advertising refers to the total number of unique individuals or households exposed to an ad or campaign at least once over a specific period. It measures the breadth of an audience that has seen or heard the marketing message.

Who relies on reach (advertising) in market research?

Media planners, marketing strategists, advertisers, brand managers and campaign analysts rely on reach metrics to evaluate the effectiveness and scope of media placements.

What are key aspects of reach (advertising) in market research?

  • Represents unique audience members.
  • Measured over a defined time frame.
  • Often paired with frequency (how often they saw the ad).
  • Can be calculated across platforms (TV, digital, radio, etc.).
  • Based on impressions, panel data or digital tracking.

Why is reach (advertising) important in market research?

Reach helps determine how widely an ad has been seen, which is essential for evaluating market penetration, brand awareness potential and ROI. It supports strategic decisions about media buying and campaign optimization.

How do market researchers use reach (advertising)?

Researchers use reach to assess whether a campaign is hitting the intended audience, compare the effectiveness of different media channels and optimize future ad placements for maximum exposure and efficiency.