The Federal Reserve Bank of San Francisco is one of twelve regional banks in the Federal Reserve System, which serves as the central bank of the United States. Established in 1914, it plays a crucial role in implementing monetary policy, supervising banks, and providing financial services to depository institutions and the federal government. Located in San Francisco, California, the bank covers the 12th Federal Reserve District, which includes nine western states. It conducts economic research and provides data to help inform decisions on interest rates and other financial matters, contributing to the overall stability of the U.S. economy.