Founded in 1990 in Marion, Illinois, South Porte Bank is a community-focused financial institution dedicated to serving the needs of local individuals, families, and businesses. The bank prides itself on local decision-making and personalized customer service. In April 2021, South Porte Bank merged with Southern Illinois Bank but continues to operate under its established brand name as a branch, offering a full suite of banking products including checking and savings accounts, personal and commercial loans, mortgages, and online banking services.