The primary American Bankers Association routing transit number utilized for electronic transactions, direct deposits, ACH transfers, and wire payments involving First Guaranty Bank is 065404340. Customers initiating automated clearing house payments, setting up recurring payroll direct deposits, or transferring funds between external financial institutions and their First Guaranty Bank accounts must use this specific nine-digit numerical identifier to ensure proper routing. It is always recommended to verify the correct routing number directly on official bank disclosures, personal check leaflets, or secure online banking profiles before executing large financial transfers.