MusicOomph has "put together the most comprehensive and up-to-date on podcast statistics". Check out Podcast Statistics (2019).
"On every measure, podcast awareness and usage has grown since last year, with weekly use growing at a faster pace than awareness or sampling. More than 10 million Canadian adults (36% of the 18+ population) have listened to podcasts in the past year. More than 13 million adults (45%) have ever listened. " (The Canadian Podcast Listener 2018)
"More than 7 million Canadian adults (26% of the 18+ population) listen to podcasts at least once a month." (The Podcast Exchange)
"Canadians are quite familiar with the term “podcasting,” with 61% of all adults 18+ saying they are familiar with the term. Almost half of Canadians 18+ (47%) have ever listened to a podcast, and the younger the respondent, the more likely they are to have listened. Sixty percent of adults 18-34 have listened to a podcast at some point in time.
Twenty-eight percent of all Canadian adults are monthly podcast listeners, and the younger the listener, the more likely they are to be a monthly or weekly podcast listener. Forty-one percent of those age 18-34 are monthly podcast listeners." (Edison Research)
"One of the great powers of podcasting is the attention is attracts. It's tricky to encourage students to spend 30 minutes reading an article or watching a recorded lecture. That's because text and video require the student's full attention – they need to sit patiently, doing just one thing. As you probably know, this is tricky, not least because of the range of distractions just sitting waiting on the next browser tab." (The Podcast Host)
Goldman (2018) provided 3 analysis on the impact of podcasts in education:
"With the ongoing growth of podcast creation and consumption, podcasts can no longer be ignored by anyone in this digital age. Schools need to begin acknowledging and taking advantage of this digital learning tool. Despite the risk of podcasts becoming pure entertainment, a distraction, and providing no learning benefits. There is now significant data that suggests otherwise" (p. 13).