Trustmark Corporation operates as the bank holding company for Trustmark National Bank that provides banking and other financial solutions to individuals and corporate institutions in the United States. The company offers checking, savings, and money market accounts; individual retirement accounts; certificates of deposit; drive-in and night deposit services; financing for commercial and industrial projects, income producing commercial real estate, owner-occupied real estate, and construction and land development; and installment and real estate loans, and lines of credit. It also provides mortgage banking services, including construction financing, production of conventional and government insured mortgages, and secondary marketing and mortgage servicing; overdraft facilities; safe deposit facilities; and treasury management services.