Twitter usage

  • 284 million monthly active users
  • 500 million Tweets are sent per day
  • 80% of Twitter active users are on mobile
  • 77% of accounts are outside the U.S.
  • Twitter supports 35+ languages
  • Vine: More than 40 million users

Company facts

  • 3,600 employees in offices around the world
  • 50% of employees are engineers
  • Incorporated April 19, 2007
  • At Twitter HQ we consume 1,440 hard boiled eggs weekly.
  • We also drink 585 gallons of coffee per week.



1355 Market Street
Suite 900
San Francisco, CA 94103

U.S. offices

Atlanta, Austin, Boston, Boulder, Chicago, Detroit, Los Angeles, New York, Seattle, Sunnyvale, Washington

International offices

Amsterdam, Berlin, Dublin, London, Madrid, Paris, Rio de Janeiro, São Paulo, Singapore, Sydney, Seoul, Tokyo, Toronto, Vancouver


Board of directors

Jack Dorsey (Chairman)
Co-Founder, Twitter, and CEO, Square

Dick Costolo
CEO, Twitter

Peter Chernin
Founder and Chairman,
Chernin Entertainment and The Chernin Group

Peter Currie
President, Currie Capital

Peter Fenton
General Partner, Benchmark Capital

David Rosenblatt
CEO,, Inc.

Marjorie Scardino
Chairman, MacArthur Foundation

Evan Williams
CEO, Medium; CEO, Obvious Corp.

Executive Team

Dick Costolo

Adam Bain
President, Global Revenue

Alex Roetter
VP, Engineering

Anthony Noto

Kevin Weil
VP, Product

Luca Baratta
VP, Finance

Vijaya Gadde
General Counsel

Adam Messinger

Gabriel Stricker

Brian “Skip” Schipper
VP, Human Resources