Citibank, N.A. (N. A. stands for "National Association"; stylized as citibank) is the primary U.S. banking subsidiary of financial services multinational Citigroup. Citibank was founded in 1812 as the City Bank of New York, and later became First National City Bank of New York. The bank has 2,649 branches in 19 countries, including 723 branches in the United States and 1,494 branches in Mexico operated by its subsidiary Banamex. The U.S. branches are concentrated in six metropolitan areas: New York, Chicago, Los Angeles, San Francisco, Washington, D.C., and Miami.Citibank is the 4th largest bank in the United States in terms of assets. Source: Wikipedia (en)