There are a lot of them in the New England area. I've had friends from the mid west come here who couldn't get over how cheap antiques were. Plus there is the Brimfield, MA Antique Show three times a year. That show is one of the largest in the entire country. So large that it is impossible to see everything in a single day. A lot of people from all over the country come to MA just for that show.
I tend to find better deals at lawn sales though and it is getting warm enough that they should be starting up in another month or two depending where you live.