Farmers State Bank of Somonauk Address: 128 S Depot St, Somonauk, IL 60552 Phone: (815) 498-2396 Banks Other Businesses: Heartland Bank & Trust Co at 128 S Depot St, Somonauk, IL 60552 Resource Bank at 605 E Market St, Somonauk, IL 60552 Rambo's Bar & Grill at 140 W Market St, Somonauk, IL 60552 Rambo's Bar & Grill at 130 W Market St, Somonauk, IL 60552