Paul encountered widespread criticism earlier this year when he posted a video showing the body of a supposed suicide victim - but that hasn't stopped him rising to the top of the charts.
Responding to the latest figures, Simon Leggett, research director at Childwise, told the BBC: "Zoella losing her top YouTuber slot to Logan Paul shows that we could be moving into a new era with a change in the kind of vloggers that are popular with children.
"Children used to mainly follow wholesome, big-sister/brother types who offered chatty advice and company. However, children's favourite new vloggers are more edgy, with a style more akin to negative playground behaviour where the most popular vloggers are the ones that do the worst possible things they can get away with on YouTube."
It's been claimed, in fact, that the video of his visit to Aokigahara, Japan's 'suicide forest, has helped to boost Paul's following.
Leggett added: "Prior to this year, Logan had not been chosen by children at all.
"His growing audience, which starts as young as age nine, were potentially exposed to shocking content over new year after Logan's ill-considered decision to upload a widely criticised video of his visit to Aokigahara, Japan's 'suicide forest.'"
Despite this, Paul still issued an apology amid widespread criticism of his controversial video.