Claim: Twitter's headquarters are in the most populous US state.
Evidence: Twitter Inc. is based in San Francisco , California , United States , and has more than 25 offices around the world.
California -LRB- -LSB- kælᵻˈfɔːrnjə , _ - ni.ə -RSB- , -RRB- is the most populous state in the United States and the third most extensive by area.