The Top 10 Social Media Sites & Platforms 2021
What are the most popular social media platforms in 2021? See what digital marketers need to know about Facebook, Twitter, LinkedIn, and more.
The top social media sites have seen plenty of movement in the the last few years.
Facebook might still be dominant, but TikTok has seen the fastest growth of any social media platform. From launch only five years ago, the video-based platform is now fifth for most monthly active users (MAU).
Meanwhile, Instagram has seen impressive growth and holds the number four position for MAU.
This means for brands wanting to reach an audience, the choice of social media platforms is growing and shifting. And attention must be paid to where your demographic might be moving to.
Facebook was once the place for all advertising but is now favored by an older user group. Gen Z and Millenials have migrated to Instagram, and watch this space for TikTok.
With that in mind, how do you choose where to invest your time (and potentially ad spend)?
The best move is to consider which channels are right for your audience. Test a presence on the relevant social media sites, and from results, strategically choose which ones to double down on.
We’re going to take a look at the most popular social media platforms in our social media guide: Facebook, Twitter, LinkedIn, Instagram, Snapchat, TikTok, Pinterest, Reddit, YouTube, and WhatsApp.
Top 10 Social Media Platforms Compared
| MAU | Revenue | Launched | Headquarters | ||
| 1 | 2.7 billion | $86 billion | 2004 | Menlo Park, CA | |
| 2 | YouTube | 2 billion | $19.8 billion | 2005 | San Bruno, California |
| 3 | 2 billion | $5 billion | 2009 | Menlo Park, California | |
| 4 | 1.16 billion | $6.8 billion | 2010 | Menlo Park, CA | |
| 5 | TikTok | 689 million | $35 billion | 2016 | Culver City, CA |
| 6 | Snapchat | 433 million | $911 million | 2011 | Los Angeles, CA |
| 7 | 430 million | $212.5 million | 2005 | San Francisco, CA | |
| 8 | 416 million | $1,693 million | 2010 | San Francisco, CA | |
| 9 | 353 million | $3.72 billion | 2006 | San Francisco, CA | |
| 10 | 310 million | $8.05 billion | 2003 | Mountain View, CA |
The Top 10 Social Media Apps by Monthly Active Users
| MAU | ||
| 1 | 2.7 billion | |
| 2 | YouTube | 2 billion |
| 3 | 2 billion | |
| 4 | 1.16 billion | |
| 5 | TikTok | 689 million |
| 6 | Snapchat | 433 million |
| 7 | 430 million | |
| 8 | 416 million | |
| 9 | 353 million | |
| 10 | 310 million |
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