Live for Today. Bank for Tomorrow. Dieterich Bank, a unit of Prime Banc Corp., has approximately $1.2 billion in assets with 13 locations in South Central Illinois and the Metro East region, as well as a loan production office in South County, St. Louis. For the past four years the bank has been recognized as a Best Places to Work in Illinois. For more information, visit Dieterich Bank’s website at www.dieterichbank.com. Member FDIC, Equal Housing Lender Dieterich Bank NMLS# 408244