Is there a large mall or shopping center in or near Stanford?

There are no malls in Stanford at all. Come to think of it, shopping is pretty difficult to find in this town. When it comes to which mall is the closest, it's a little unclear. You have the Poughkeepsie Galleria about 30-40 minutes away, and the Hudson Valley Mall in Kingston is about as far. Having associated with Stanford residents in the past, I can tell you that at least in their case, they did their mall shopping in Poughkeepsie, but it was quite an undertaking each time.