Banks in Williamstown, Vermont, the US. Banks locations in Williamstown, Vermont. Find the nearest banks locations, near you. All types of business services Accounting ATM Bank Finance Real estate School All banks in Williamstown Closed now Lake Sunapee Bank ATM Finance Bank +1 802-433-1030 20 Methodist Lane, Williamstown, Vermont 05679 Write a review Phone Hours Website Directions Closed now Lake Sunapee Bank Finance Bank +1 802-433-1030 20 Methodist Lane, Williamstown, Vermont 05679 Write a review Phone Hours Website Directions