ORNL Federal Credit Union | Banking, Loans, Investments & More. ORNL FCU provides deposit accounts, personal loans and mortgages, VISA credit cards, investment and insurance services, and financial education.. Credit union, membership, deposits, loans, mortgages, visa, credit card, debit card, investments, insurance, financial education, ATM, ITM, Tennessee, community, East Tennessee, Anderson, Blount, Campbell, Claiborne, Cocke, Grainger, Hamblen, Jefferson, Knox, Loudon, Monroe, Morgan, Roane, Scott, Sevier, Union, county, counties, branches