Facebook Reaches 100 Million Monthly Active Users in the United States

earthnightFacebook announced last week that it had crossed the 350 million worldwide active user milestone. If Facebook were a country, it would now have the third largest population in the world. Today, Facebook just crossed the 100 million active user mark in the United States — actually, more like 100.5 million, according to data we’re tracking at Inside Facebook Gold, our data and research service covering Facebook growth worldwide. That’s nearly one third of the total US population logging into Facebook each month.


Facebook has been growing in the US by at least a few million new users a month for most of the past year. The company had 98.1 million as of a week ago, having grown by around 4 million over the course of November. However, while last week may have been an especially fast-growing one for the company, the numbers it reports sometimes have a lag, or otherwise are not precise.

Anyway, if we assume the number is at least close to accurate (which it should be), this means the US is the first country to reach 100 million users, even though more than 70 percent of its 350 million worldwide monthly active users live elsewhere. The US audience is especially vital to Facebook, as the company currently makes most of its money from advertising, and the US is the single-largest advertising market in the world.

In context, the second-largest Facebook country is the United Kingdom, which has 23.2 million monthly active users. Third place is Turkey, with 16.5 million. Facebook started in the US, but has more recently grown faster in the rest of the world; today’s milestone reminds us that it is still gaining ground on its home turf — and across age groups. Here’s the age breakdown of US users, from Inside Facebook Gold:

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10 Responses to “Facebook Reaches 100 Million Monthly Active Users in the United States”

  1. Mark Evans says:


    Any idea about how many Facebook users there are in Canada?


  2. Eric Eldon says:

    Hi Mark,

    Canada is 14.3 million, one of the larger Facebook countries in the world.

  3. Mark Evans says:

    Thanks for the Facebook Canada data! Much appreciated!


  4. Bill O’Reilly & Social Media: Mortal Enemies? | Blue Helm says:

    [...] you care? You alienate your viewers and listeners by saying you don’t know what Facebook is. Roughly one third of Americans actively use Facebook. This is an astonishing statistic. Many of these Facebook users undoubtedly listen to you and trust [...]

  5. Facebook Touts Diversity of Its Members | Finley & Cook, PLLC says:

    [...] researchers found that, in looking at the frequency of the last names of some 100 million Facebook users in the U.S. and comparing them with U.S. census data (with some statistical adjustments thrown in for more [...]

  6. Social Media and Children’s Hospitals | Group 3 Solutions says:

    [...] to understand and take part in today’s social media trends. As of late 2009, there are over 100 million active users on Facebook in the U.S., around 23 million unique visitors per month on Twitter and YouTube reaches nearly [...]

  7. term project – bibliography « The Dance of Digital Media says:

    [...] Eldon. E. 2009. Facebook Reaches 100Million Monthly Active Users in the United States. Retrieved from http://www.insidefacebook.com/2009/12/07/facebook-reaches-100-million-monthly-active-users-in-the-un… [...]

  8. フェイスブック、米国内ユーザー数1億4900万人。70%が毎日ログオン says:

    [...] 今日(米国時間2/10)午前、OgilvyとBuddy Mediaが共催するイベントで、Facebookの米国内代理店担当責任者のSarah Personetteが、同ソーシャルネットワークの利用状況に関する統計情報を公表した。発表によると、現在米国人1億4900万人がFacebookをアクティブに利用しているという(2009年時点での米国アクティブユーザー数は1億人だった)。またこの米国内アクティブユーザーのうち70%が毎日ログオンしている。 [...]

  9. У Facebook 149 млн активных пользователей в США, и 70% из них заходят на сайт ежедневно | Social Media News - Woldemar says:

    [...] сетью (по сравнению с 2009 годом, в США было около 100 миллионов активных пользователей). И 70 процентов из [...]

  10. More than 100M Active Monthly Facebook Users in U.S. - SocialTimes says:

    [...] the 350 million global user mark, and the social-networking site topped another milestone, as Inside Facebook reported that according to Facebook’s advertiser tools, the site now boasts more than 100 [...]

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