Find information about the management and structure of HSBC in the US and its HSBC, one of the world's largest banking and financial services organizations, has It serves customers from offices and branches in cities across the United. Pictured here are executive offices we built out at their headquarters on Fifth Avenue, the site of much of this on-call work. Our relationship has also extended​. HSBC Bank USA's main office is in McLean, Virginia, and its principal executive offices are located at Fifth Avenue, New York, New York. Its domestic.