TikTok is the sixth-largest social media platform in terms of monthly active users, with about 1 billion people using it every month. In the U.S., there are currently 78.7 million TikTok users, and this number is expected to grow to 89.7 million by 2023. Other platforms like Facebook Messenger, Douyin, QQ, and Sina Weibo have fewer monthly active users compared to TikTok.