The Federal Reserve Bank of Boston, commonly known as the Boston Fed, is responsible for the First District of the Federal Reserve, which covers New England: Maine, Massachusetts, New Hampshire, Rhode Island, Vermont and all of Connecticut except Fairfield County. The code of the Bank is A1, meaning that dollar bills from this Bank will have the letter A on them. The Boston Fed describes its mission as promoting "growth and financial stability in New England and the nation". The Boston Fed also includes the New England Public Policy Center.