Podtrac currently publishes two monthly Podcast Industry Rankings: the Top 20 Podcasts and the Top 10 Podcast Publishers.  

We've also made available a year-end ranking for 2018: the Top 10 New Podcasts of 2018.

Our Rankings use proprietary and consistent measurement methodology to allow apples-to-apples comparison of podcast audience sizes. Read About the Podcast Industry Audience Rankings to learn more about how the rankings are compiled.

 To get the updated Rankings delivered to your in-box each month, Sign Up for the Podtrac blog.

top publishers


Podcast Industry Ranking Highlights
Top 10 Podcast Publishers
US Audience: April 2019
Rank Podcast Publisher US Unique Monthly Audience Global Downloads & Streams Active Shows
1 NPR 19,385,000 143,287,000 55
2 iHeartRadio 18,448,000 123,785,000 165
3 PRX 8,171,000 59,085,000 70
4 Wondery 7,412,000 37,547,000 66
5 New York Times 7,362,000 49,617,000 9
6 Barstool Sports 6,280,000 27,885,000 28
7 This American Life/Serial 6,166,000 23,779,000 2
8 ESPN 5,414,000 40,636,000 62
9 WNYC Studios 5,168,000 24,025,000 53
10 Daily Wire 3,929,000 22,848,000 5

Total mobile and desktop US podcast audience.

Unique Monthly Audience:
Total of unique audience members who stream or download publisher's podcast content across all shows they produce.
Unique Streams & Downloads:
Total unique streams and downloads of podcast content for the month across all shows produced by publisher.
Active Shows:
Count of shows produced by publisher and measured by Podtrac which contribute to the totals in the Ranking.
Podcast Publisher:
An entity or individual which owns, creates and publishes podcasts.

Ranking data only includes publishers that participate in Podtrac measurement for the full month for which the ranking is being released.

Designates Podtrac Verified publishers. These publishers have undergone an extensive reivew of their implementations of the Podtrac Measurement System signifying their commitment to transparency in podcast measurement. Learn more at Podtrac.com

Note: Global Unique Streams & Downloads for April is reflects updates to Podtrac’s measurement algorithm.

Top podcasts

Podcast Industry Ranking
Top 20 Podcasts
US Audience: May 2019
Rank Podcast Publisher
1 The Daily The New York Times
2 This American Life This American Life/Serial
3 Stuff You Should Know iHeartRadio
4 Up First NPR
5 The Ben Shapiro Show Daily Wire
6 Planet Money NPR
7 TED Radio Hour NPR
8 Pardon My Take Barstool Sports
9 RadioLab WNYC Studios
10 Fresh Air NPR
11 Hidden Brain NPR
12 Wait Wait...Don't Tell Me! NPR
13 Freakonomics Freakonomics
14 How I Built This NPR
15 Call Her Daddy Barstool Sports
16 TED Talks Daily PRX
17 99% Invisible PRX
18 The Moth PRX
19 NPR Politics Podcast NPR
20 The Breakfast Club iHeartRadio

Ranking is based on Podtrac measurement data for Unique US Monthly Audience. Ranking includes shows that participate in Podtrac measurement for the full month for which the ranking is being released.

Designates Podtrac Verified show. Publishers of these shows have undergone an extensive review of their implementation of the Podrac Measurement System demonstrating their commitment to transparency in podcast measurement. Learn more at Podtrac.com

Podtrac measurement is free to use by any podcast. Visit Podtrac.com for more information.



Podtrac’s monthly rankings are based on U.S. Unique Monthly Audience (UMA).  UMA is a count of individual audience members for a given month.  

For the monthly Top Publishers Ranking, UMA is the number of audience members  who listen to any shows published by a given publisher in that month. Individuals may listen to multiple shows or multiple episodes of shows from a publisher in a month, but they are only counted once in the UMA metric.

For the monthly Top Podcasts Ranking, UMA is the number of audience members who listened to the show in the given month. Individuals may listen to multiple episodes of a podcast in a month but are only counted once in the UMA metric.

Our year-end rankings (Top 10 New Podcasts of 2017 and Top 20 Podcasts of 2017) are based on average unique U.S. downloads per episode.

Which PUblishers and podcasts are INCLUDED IN THE RANKINGs?

The Podcast Industry Audience Ranking of the Top 10 Publishers includes producers and publishers who create, own and distribute podcasts.  Groups that do not produce content, such as ad and content networks, are not included in our ranking.  In order for a publisher to be considered for inclusion in the ranking, they must use the Podtrac measurement system for their shows, and Podtrac must have at least 30 days of data for the publisher. 

The Podcast Industry Audience Ranking of the Top 20 Podcasts is a comprehensive ranking of top podcasts.   It includes both shows which measure with Podtrac and those which do not.  Shows which do not measure with Podtrac are denoted with an asterisk (*) on the report.   Ranking of these shows is determined by a proprietary Podtrac algorithm which uses publicly available data.

How Does Podtrac Define "Podcast?"

Podtrac adheres to the Wikipedia technical definition endorsed by the Internet Advertising Bureau (IAB):

“A podcast is an episodic series of digital audio files which a user can download and listen to. It is often available for subscription, so that new episodes are automatically downloaded via web syndication to the user’s own local computer, mobile application, or portable media player.”

Podtrac makes no judgements based on non-technical factors such as type of content or episode length.


Use of the Podtrac measurement system and inclusion in the Industry Audience Ranking reports is free to all publishers. Use of Podtrac measurement ensures consideration for the Top Publisher Ranking and assures the most accurate representation of a show’s ranking for the Top Podcasts Ranking.


Podtrac's ranking of top podcasts is based on the unique U.S. monthly audience  of each show. This ranking by audience size is useful to advertisers and those in the podcast industry who want to know which shows achieved the largest US audience during the previous month. iTunes ranks podcasts based on inputs such as the volume of recent subscriptions.  The iTunes rankings are useful to podcast listeners who want to discover new and trending podcasts.


Our first publisher ranking is of the Top 10 Publishers and our first podcast ranking is of the Top 20 Podcasts. We’ll be expanding those rankings in the coming months. To be considered for the Top Publishers Ranking and to be assured of the most accurate representation of your show on the Top Podcasts Ranking,  register with Podtrac and start using the free Podtrac Measurement Service. 


The unique monthly audience count per show is now available on the Podtrac Publisher Dashboard for all registered publishers with at least one podcast with more than 1,000 unique global audience members.  By registering for the free Podtrac Measurement System, you'll have access to your show's unique monthly audience as soon as your show reaches this audience size.

I thought Serial or other podcasts would be ranked higher in the top podcast ranking

Some podcasts like Serial publish on a seasonal schedule which results in their unique monthly audience being larger during the "season" (months when they post new episodes).  Each Top Podcast Ranking is based on the audience counts achieved during the most recent month only.  

Can I get a report of the Unique Monthly Audience numbers for the Podcasts on the ranking?

Podtrac does not publish the unique monthly audience or download numbers for individual shows. If you are an advertiser interested in any of the shows on the Ranking, contact the show publisher and ask for their unique monthly audience metric, or visit AuthenticShows.com to request a media plan for your brand.

What other ranking reports are coming up?

We currently publish a Top 10 Publishers Ranking and a Top 20 Podcasts Ranking. Each ranking is updated monthly. We will be expanding both of these rankings to include more publishers and shows in the coming months.

How can I keep up to date on the current Rankings?

Be sure to subscribe to the Podtrac Blog to keep up to date on the Podcast Industry Audience rankings as they are published  each month.