Report: Top 32 Podcasts Reach Half of Weekly Listeners

RADIO ONLINE | Wednesday, June 4, 2025 | 1:33pm CT

Edison Research

Podcast advertising just got more strategic, thanks to new data from Edison Research. In its latest analysis, the company revealed that the top 32 podcasts in the U.S. now reach half of all weekly podcast listeners -- an audience of 50 million Americans.

The findings come from Edison's "Infinite Dial" report and its Edison Podcast Metrics, a comprehensive measurement tool that allows advertisers to calculate audience reach based on real podcast listening behavior. According to the March edition of Infinite Dial, 35% of Americans aged 12 and older, roughly 100 million people, tune into a podcast each week.

The research underscores the significant influence of the most popular shows: advertisers can reach half the weekly podcast audience simply by placing ads in the top 32 titles. However, reaching the remaining 50 million listeners requires advertising across thousands of smaller shows. That broad tail, while harder to reach, includes highly engaged niche audiences that often respond more deeply to targeted messaging.

Edison's analysis also notes that its Podcast Metrics data will soon be integrated into Nielsen Media Impact -- a planning tool for media agencies. This marks the first time podcast data will be included in the platform, opening the door for more precise planning and increased investment in podcast ad campaigns.

The fusion of podcast analytics with traditional media planning tools could help further legitimize podcasting as a central component of brand advertising strategies, as the medium continues to mature and attract larger portions of the U.S. population.