ORNL FCU Routing Number:  264281416. These nine numbers identify ORNL FCU as your financial institution.

Account Number. Your complete account number contains a minimum of 12 digits. The full account number is needed to successfully establish any ACH transfer including payroll direct deposits and automated tax refunds.

Check Number. Every check contains a unique check number. It is best practice to use checks in sequence, even when making a payment by phone, and to record each check in your checkbook.