Fifth Third Bank | 200 S. Washington St., Bloomington, IN, 47408 | Banks & Banking Associations · Financial Advisors / Services · Mortgage Loans. Fifth Third Bank, Business to Business Sector, Banking. 38 Fountain Square Plaza Cincinnati, OH 45202. (513) 534-6998. Fifth Third Bank has been accredited by the Better Business Bureau since January 1, 1928. They have an A+ rating, with 896 complaints and 81.