What New York City building housed Tumblr's headquarters?

Tumblr’s headquarters were housed at 770 Broadway in New York City.

The address is a major commercial building in Manhattan’s NoHo area, near Union Square and Astor Place. Tumblr occupied space there during the company’s rapid growth, when its New York operation became a recognizable part of the city’s technology scene.

The building was also associated with other major media and technology tenants, which can make the address easy to mix up with better-known Manhattan landmarks such as One Times Square or 30 Rockefeller Plaza. Those buildings are famous New York offices, but neither was Tumblr’s headquarters.

Tumblr was founded by David Karp in 2007 and grew from a small blogging service into a prominent social platform. Its corporate history later changed substantially: Yahoo acquired Tumblr in 2013, Verizon acquired Yahoo in 2017, and Automattic bought Tumblr in 2019. The company has since operated with a more distributed workforce, but 770 Broadway remains the canonical historical headquarters answer.