Main Source Bank Address: 201 S Main St, Lynn, IN 47355 Phone: (765) 874-2330 Banks Other Businesses: US Bank at 104 N Main St, Lynn, IN 47355 Merchants Bank Of Indiana at 7375 S US Highway 27, Lynn, IN 47355 Merchants Bank Of Indiana at 6880 S Arba Pike, Lynn, IN 47355 Greensfork Township State Bank at 6880 S Arba Pike, Lynn, IN 47355