May 24, 2022

Social Media Milestone: Tumblr Hits the 100 Million Blog Mark

Celebrate with this Tumblr history timeline posted by a Tumblr staff member.

The first Tumblr blog went online in January 2007. 1 million blogs were online in May 2009.

As of today those 100.3 million blogs contain 44.6 billion posts.

See Also: Tumblr crosses 100 million blogs, with 44.6 billion posts inside

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.