The ACH routing number for Huntington is 044000024. Short for Automatic Clearing House, ACH numbers are unique to each bank in the US. The ACH. For MCSO payors, you must delete your TCF bank account information and add Huntington Bank, your new routing and new account number before making a payment. United Bank offers personal banking, business banking, and wealth management services to meet your financial needs in WV, VA, MD, OH, PA, and DC.