West Vincent Township has it’s Reflective Address Number, do you? As you know, house numbers are an integral part of the County’s 911 emergency system. Residents are required to display their numbers on mailboxes, doorways or driveway entrances, using reflective numbers at least 3″ high. Your cooperation may save a life – perhaps yours. If you would like to order reflective address markers, fill out and mail the order form and send it to the Ludwig’s Corner Fire Department with $15.