Facebook launched in 2004 from a Harvard University dorm room

Facebook began on February 4, 2004, when Mark Zuckerberg launched it as "TheFacebook" from his dorm at Harvard. The site started as a way for Harvard students to connect with each other online, showing photos and basic profile information. Within a month, more than half of Harvard's undergraduate students had created accounts.

The platform expanded to other universities throughout 2004 and 2005, then opened to anyone 13 and older with a valid email address in September 2006. That shift from a college-only network to a public platform is what turned Facebook into the global service it is today. By the end of 2006, Facebook had over 12 million active users.

Key Takeaways

  • Facebook started on February 4, 2004, as a social network for Harvard University students only.
  • The platform expanded to other colleges and universities before opening to the general public in 2006.
  • Facebook's shift to a public platform in 2006 allowed it to grow from millions to billions of users over the following years.
  • Understanding Facebook's history helps explain why the platform has the features and privacy settings it does today.
  • The company acquired Instagram in 2012 and WhatsApp in 2014, becoming a larger social media corporation.

How Facebook grew from a college network to a global platform

In its first year, Facebook was limited to college students. Zuckerberg and his team added universities one at a time, and students could only join if their school had been added to the network. This exclusivity actually drove adoption—students wanted to join because their friends were already there, and because it felt like a private space for their age group.

By 2005, Facebook had expanded to high schools and some international universities. The company also introduced the News Feed in 2006, which showed users updates from their friends in one place rather than requiring them to visit each friend's profile individually. This feature made the platform much more engaging and is still the core of how Facebook works today.

When Facebook opened to anyone 13 and older in September 2006, it removed the barrier that had kept it exclusive. Parents, teachers, and older relatives could now join the same network as younger users. This created the mixed-age environment that Facebook has today, which is very different from the college-only social network it started as.

Why the founding date matters for understanding Facebook today

Knowing that Facebook started in 2004 helps explain some of its current features and limitations. The platform was designed by college students for college students, which shaped how profiles, messaging, and privacy settings work. Many of those original design choices are still visible in how Facebook operates, even though the user base has changed dramatically.

The 20-year history also explains why Facebook has faced ongoing criticism about privacy and data use. Early versions of the platform collected and displayed user information in ways that seemed normal in 2004 but raised concerns as the service grew larger and more powerful. Understanding this timeline can help you make informed decisions about what information you share on the platform and how you configure your privacy settings.

Facebook's major changes since 2004

Facebook introduced the News Feed in 2006, which fundamentally changed how users experience the platform. Before that, you had to visit individual profiles to see what your friends were doing. The News Feed automated this by showing updates from everyone you follow in one continuous stream.

The company launched the Facebook Platform in 2007, which allowed outside developers to build games and applications that ran inside Facebook. This led to the explosion of games like FarmVille and Mafia Wars that many people played through Facebook in the late 2000s and early 2010s.

Facebook acquired Instagram in 2012 and WhatsApp in 2014, transforming itself from a single social network into a corporation that owns multiple communication platforms. In 2021, the parent company rebranded itself as Meta Platforms, though the Facebook app itself kept its original name. These changes show how the company has evolved far beyond the college network it started as.

How Facebook's early design affects your account today

The features you see when you set up a Facebook account today still reflect decisions made in 2004. The profile format, the way you add friends, and the basic structure of how information is shared all come from the original design. This means some features may feel outdated or confusing compared to newer social media platforms, because they literally are older.

Facebook's privacy settings are also a legacy of its evolution. When the platform was small and limited to college students, privacy was less of a concern because everyone in the network knew each other or went to the same school. As Facebook grew to billions of users worldwide, privacy settings were added on top of the original design rather than being built in from the start. This is why configuring your privacy on Facebook can feel complicated—the settings reflect decades of additions rather than a single coherent plan.

Frequently Asked Questions

Who created Facebook?

Mark Zuckerberg created Facebook in 2004 while he was a student at Harvard University. He worked with other Harvard students including Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes in the early days. Zuckerberg served as the company's CEO from its founding through today.

Was Facebook the first social network?

No. Platforms like Friendster (2002) and MySpace (2003) existed before Facebook. However, Facebook's focus on real names and college networks made it different from earlier social networks, and it eventually became much larger than its competitors.

Why did Facebook open to the public in 2006?

Facebook opened to anyone 13 and older to grow beyond the college market. The college-only model had limits—there were only so many students in the world. Opening to the general public allowed the company to reach billions of potential users and become a truly global platform.

How many users did Facebook have when it started?

Facebook had about 1,000 users in its first month (February 2004), all Harvard students. By the end of 2004, it had grown to about 1 million users across multiple universities. The number grew much faster after opening to the public in 2006.

Is Facebook still the largest social network?

Facebook remains one of the largest social networks by total users, though its growth has slowed in recent years. Platforms like TikTok and Instagram (which Facebook owns) have become more popular with younger users. Facebook's user base skews older than it did in its early years.