Branch Locations, directions and hours. A mortgage payoff letter can come in two forms.One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan. 1) Call the mortgage department and request an official principal payoff letter. Borrowing doesn't have to be a hassle. To request a payoff statement, please fax a written request to US Bank at 877-903-6972. Come see why LCCU, Lewis Clark Credit Union, is a whole new financial experience. We offer progressive financial services, with hometown member support. With a robust online banking platform, it's easy manage all your accounts in one place. Checking, Savings, Money Markets, and more.