Dieterich Bank
BankingIllinois, United States51-200 Employees
Based in Effingham, Illinois, Dieterich Bank operates as a regional banking institution and a unit of Prime Banc Corp. It has about $1.5 billion in assets and runs a network of 16 locations across South Central Illinois and the Metro East, plus a loan production office in South County, St. Louis, and a corporate center in Effingham. The bank is a member of the FDIC and an Equal Housing Lender, and its NMLS number is 408244; it has been recognized as a Best Places to Work in Illinois for seven years. Its market footprint includes Illinois communities, with a Missouri loan production office that signals cross-regional activity. In 2026, Dieterich Bank appointed Jarrod Rucks as Treasury Management Officer to serve Monroe and Randolph counties, indicating ongoing expansion of its treasury management capabilities.