1st Source Bank Address: 411 Illinois St, Walkerton, IN 46574 Phone: (574) 586-3131 Banks Other Businesses: First Source Bank at 411 Illinois St, Walkerton, IN 46574 Marks Water Treatment Service at 10055 E State Road 4, Walkerton, IN 46574 Bel-Air Motel at 308 Cherry Dr, Walkerton, IN 46574 Memories Pizza at 608 Roosevelt Rd, Walkerton, IN 46574