HSBC Bank USA is an American subsidiary bank. It is a part of the United Kingdom-based bank. Its headquarters can be found in New York City, New York, though its nominal office will be found in McLean, Virginia. HSBC Bank USA is a national bank that has been chartered under the National Bank Act. HSBC Bank USA currently as more than 220 branch locations. There are an impressive number of people working for the HSBC Bank USA with numbers totaling well over 43,000 people in their hundreds of locations all across the country. They service several states.