Most popular social networks by monthly active users
Facebook is the most popular social network with monthly active users of 2.3 billion, followed by Youtube at 1.8 billion and WeChat at 1 billion. These numbers are for 2018. These numbers are huge considering the total population of the world stands at around 7.7 billion (Apr 2019), and 3.5 billion are online.
Note the presence of TikTok on this list and its rapid growth indicated by the fact that it was launched for a global audience in 2017. It was the most downloaded app in the US in 2018.
- OurWorldInData.org, https://ourworldindata.org/rise-of-social-media