Banks in Williamsport, Maryland, the US. Banks locations in Williamsport, Maryland. Find the nearest banks locations, near you. All types of business services ATM Bank Finance Funeral home Insurance Real estate School Travel All banks in Williamsport 2/5 Open now Until 01:00 pm M&T Bank ATM Finance Bank +1 301-223-7601 14 West Potomac Street, Williamsport, Maryland 21795 Write a review Phone Hours Website Directions