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# De-duplicated Reach
- URL: https://www.adlingo.org/glossary/de-duplicated-reach/
- Published: 2025-01-15T11:21:00.000Z
- Updated: 2025-01-15T11:21:00.000Z
- Description: The net unique audience reached across multiple platforms or campaigns after accounting for overlap in viewership.
- Author: Travis Lusk
- Tags: Measurement, #glossary, #Import 2026-10-27 17:05

The count of unique people reached across all your channels, with duplicates removed. If someone saw your ad on TV, mobile, and desktop, that's one person in your reach number, not three. Most platform reports don't de-duplicate across channels because they don't have visibility into each other's data. Total reach from adding platform numbers together is always overstated. How overstated depends on your channel mix and your audience overlap.