Vendor reportSprout Social, 2026
75% of Substack users say they interact with brands there at least once a week
Engagement
75%
of Substack users say they interact with brands there at least once a week
- Reader Note:
- Based on Sprout's consumer survey of 2,305 respondents in the US, UK and Australia who have at least one social media account and follow at least five brands, fielded October 6 to 16, 2025. The figure is the share of users who said they interact with brands on Substack at least once per week. The report does not state the base size for Substack users specifically. The source then suggests company Substacks are becoming more common, but that conclusion is not directly measured by this figure.
- Evidence:
- Self-reported behaviour
- Vendor interest:
- Moderate — This comes from a company with a commercial interest in this market, so it is not a neutral source.
- Sample:
- Online surveys of 2,305 consumers in the US, UK and Australia with at least one social media account and following at least five brands, plus 1,200 marketing leaders in the US, UK and Australia responsible for social media.
Good for
A rough sense of size and direction, and deciding what to look at first.
Not for
- Exact numbers, or saying that one thing caused another.
- The source talks about this as cause and effect — that is its reading, not a finding.
- This comes from a company with a commercial interest in this market, so it is not a neutral source.




