When it comes to how many WhatsApp users there were among young people aged 18-24, it was the fourth most popular social media site, with a 66% reach. Their parent company’s flagship platform Facebook and its Messenger, however, had a whopping 95% share of the online population as users. Reaching 60% of all online adults, this messaging app was essentially tied in 2019 with fellow Facebook-owned social network Instagram when it comes to user penetration in the UK. WhatsApp had the third-highest reach of all social media sites in Britain in 2019. However, whatsapp usage statistics are bound to change, as it’s projected to gradually decrease to 38.35 million by 2025, shedding over 2 million users. The number of the app’s average monthly active users in Great Britain accounted for 40.41 million in 2020, the third-highest in Europe and seventh in the world. Whatsapp has 40.23 million users in the UK in 2021. The app dropped to 23rd place in terms of downloads in the UK in January 2021.ġ.