Currency in Circulation
More than 99 percent of the total dollar amount of paper money in circulation in the United States today is made up of Federal Reserve notes. The other small part of circulating currency consists of U.S. notes or legal tender notes still in circulation but no longer issued.
Federal Reserve notes are printed and issued in denominations of $1, $2, $5, $10, $20, $50, and $100. The $500, $1,000, $5,000, and $10,000 denominations have not been printed since 1946.
The Federal Reserve Act requires that adequate backing be pledged for all Federal Reserve notes in circulation. U.S. Treasury securities, acquired through open market operations, are the most important form of collateral and provide backing for most of the value of the currency in circulation. Some other types of collateral the Federal Reserve holds are gold certificates and certain eligible instruments such as notes, drafts, and bills of exchange.
The Federal Reserve System, established by Congress in 1913, issues Federal Reserve notes through its 12 Federal Reserve Districts. Every district has its main office in a major city, and all but two have branches in other large cities. Each district is designated by a number and the corresponding letter of the alphabet, as shown at right.
The Bureau of Engraving and Printing, a division of the U.S. Treasury Department, produces currency for the Federal Reserve System to replace damaged or worn notes or to support economic growth. Federal Reserve Banks issue currency according to the need in their districts. The district letter and number on the face of a note identify the issuing Reserve Bank (see the diagram). A note with F6 on its face was issued by the Federal Reserve Bank of Atlanta, for example.