The best place to find a variety of toilet flanges is a home hardware store or Amazon. Department stores carry toilet flanges but they won’t have the variety offered by Amazon, Home Depot or Loew’s. To avoid buying the wrong toilet flange, remove the toilet from the floor and examine the old flange. Depending on the flange’s material and how badly it is damaged, you might consider opting for a sturdier copper, stainless steel or brass flange.