There are 5.79 billion social media accounts in active use right now, equal to 69.9% of everyone alive. Roundups from 2023 were quoting 4.74 billion, so if that figure is still sitting in your pitch deck, it’s off by more than a billion.
Growth hasn’t stalled either. The year to April 2026 added 294 million new user identities, a 5.4% rise, or more than 800,000 a day. (DataReportal says “identities” on purpose. Duplicate accounts mean the figure may not match the count of actual humans.)
The time figure is the one that gets me. The typical user spends 18 hours and 36 minutes a week on social platforms, which is more than one full waking day. Added up, the world spends 15 billion hours a day on this stuff.
Who’s actually biggest
Depends who you ask, and how they count. By the companies’ own numbers:
- Facebook has 3.07 billion monthly users
- WhatsApp and Instagram sit at 3 billion each
- YouTube ads reach 2.58 billion people
- TikTok ads reach 1.99 billion adults
- Pinterest reported 640 million for Q2 2026
- Threads hit 500 million in June 2026
Seven platforms now claim a billion or more. But ask people what they use and the race tightens: in GWI’s survey, 56.9% of online adults used Facebook in the past month, 55.4% used YouTube and 55.1% used Instagram. Track which apps get opened on phones and YouTube comes first, with WhatsApp second.
Honestly, monthly user counts are the least useful numbers in this article. Every platform is huge. The numbers worth your time are your own, pulled from a decent social media analytics tool, because what matters is what people do once they’re on a platform. And that varies a lot.
What people do on each one
Facebook is where people message friends and family. TikTok users mostly don’t care about that and come for funny videos instead. Instagram and Snapchat users like posting their own content, which is far less common on TikTok, Reddit and LinkedIn. (If Instagram is your main channel, I’ve compared the Instagram schedulers and Instagram analytics tools separately.) Pinterest users are the ones researching brands.
That last one deserves more attention than it gets. Pinterest’s 640 million is an all-time high, up 11% in a year, and Gen Z now makes up over half its user base. Most marketers treat it as an afterthought, which means a young, shopping-minded audience with thin competition.
Age splits the map in predictable ways. Younger people tend to name Instagram as their favourite platform, while older generations prefer Facebook and WhatsApp. Among US teens, Pew found nine in ten use YouTube, 63% use TikTok, 61% Instagram and 55% Snapchat, and 73% are on YouTube daily. Facebook’s teen audience fell from 71% in 2014-15 to 32% by 2022. If your customers are under 20 and you aren’t making video, you aren’t reaching them.
TikTok search is real and oversold
49% of US consumers have used TikTok as a search engine, up from 41% two years earlier, according to Adobe’s 2026 survey. Among Gen Z it’s 65%.
Here’s the part that gets left off the conference slides. Only a quarter of Gen Z found TikTok effective for finding information, the share who’d rely on it over Google halved from 8% to 4%, and 89% of Gen Z still prefer Google over everything else. (The survey covered 807 consumers, so don’t over-read it.)
My take: people search TikTok for things they want to see, like a restaurant’s food or a product in someone’s hands. Make videos that answer those searches. But before you tear up your SEO budget, open your website analytics and check where your traffic and sales come from today. For most sites it’s still Google by a wide margin.
X and Threads
Threads passed X on mobile, with 141.5 million daily users against 125 million in January 2026 (Similarweb’s numbers). X’s US mobile audience is roughly half what it was a year earlier. But X still pulls 145.4 million daily web visitors against 8.5 million for Threads, so combined, X leads by over 270 million to roughly 150 million.
I’m not sure either is worth much posting effort for a small business. With a B2B or tech audience, keep X and test Threads. Both are better for listening than for broadcasting anyway, and a social media monitoring tool will catch brand mentions without you living in the feed. A local gym can skip both and put the hours into Instagram (I went through the tools that suit gyms in another post).
You need two platforms
At least 98.8% of any platform’s users also use another one, and the average person visits 6.5 platforms a month. DataReportal’s own conclusion is that if reach is the goal, one or two of the larger platforms already gets you most social media users.
So being everywhere buys very little extra reach while multiplying the workload. Pick the platform where your customers behave the way you need (researching on Pinterest, watching on YouTube), add one more, and post consistently on both. A queue loaded into a scheduling tool for two platforms beats sporadic posting on six.