Trustmark National Bank is a banking company that is based in the United States. They were founded in the year 1889 with a signle locationand have since expanded their locations exponentially. There are locations found in Mississippi, Tennessee, Florida, Alabama and Texas. Within these many locations, there are well over 3,000 people who are employed within them. It began in Tennessee and expanded from there, though the Trustmark National Bank headquarters can still be located in this state to this day. They put focus not only on their customer's finances but on their idea of customer service as well.