New data shows that almost 2.5 million Australians are now using TikTok, equivalent to 10.5 per cent of the population aged six years or older.

The Roy Morgan research shows TikTok has grown its user base by more than 850,000 during the first half of the year, to be easily the fastest growing social media company in Australia.

The user base is predominantly female, with 1.5 million women and girls now using the site, compared to 985,000 men and boys.

Over a quarter of Australians in the youngest Generation Alpha (28 per cent) are now using TikTok, with a significant user base among Generation Z at 20 per cent.