A routing number is a nine-digit code used in the United States to identify the specific financial institution responsible for processing transactions. Also known as an ABA (American Bankers Association) routing number, it is used primarily for domestic payments, such as direct deposits, wire transfers, electronic payments, and check processing. The routing number ensures that funds are directed to the correct bank or credit union. It typically appears on the bottom left corner of checks, preceding the account number. Each routing number is unique to a particular bank and its geographic location, which helps facilitate the efficient and accurate routing of financial transactions across the U.S. banking system. The use of routing numbers is essential for maintaining the integrity and reliability of payment processes.
