1. Keystone Savings Bank Po Box 243, Marengo, IA 52301 Coordinate: 41.786285,-92.07205 Phone: (319) 642-7345
2. Grinnell State Bank 1101 Court Ave, Marengo, IA 52301 Coordinate: 41.7999,-92.07047 Phone: (319) 642-5511