Citigroup, Inc. citigroup.com Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Location Address 100 Citibank Dr San Antonio, TX 78245 Mailing Address 100 Citibank Dr San Antonio, TX 78245 Products & Services Finance, Legal & Admin Svcs Financial Services / Banking / Leasing Financial Services / Banking Update Profile