Niagara County DMV to Begin Walk-In Hours on April 13th By: Staff Reporter Niagara County Clerk Joseph A. Jastrzemski today announced that the Niagara County Department of Motor Vehicles (DMV) will be putting a schedule in place that allows residents to come to a local DMV office without an appointment one day a week at each of the county’s three DMV offices. Jastrzemski said this new plan would begin mid-April and will be in place to handle the usual surge of activity that comes through his office each spring as people register recreational vehicles, boat trailers, cars in storage and so on.