What city was Twitter’s original headquarters located in?

Twitter’s original headquarters was located in San Francisco.

Twitter was founded in the San Francisco technology community and established its early corporate base there. The company’s association with the city reflected the concentration of internet startups, venture investors, engineers, and digital-media companies in the San Francisco Bay Area.

Twitter’s origins are linked to the podcasting company Odeo, whose employees developed the short-message service that became Twitter. As usage grew, the company expanded its offices and workforce while retaining San Francisco as its central headquarters for many years.

San Francisco should not be confused with Twitter’s legal incorporation history or with the locations of later offices. The company operated internationally and maintained offices in other cities, but its best-known original headquarters was in San Francisco. The headquarters was later moved to a location in the same metropolitan area during Twitter’s corporate development.