5, one is a serger. Since I'm a seamstress besides a quilter, they've all had their purpose at one time or another, and I still continually use 3 of them on a daily basis. My fourth one is a converted treadle that I started with (and I'll never, ever give her up!)and now she's just pretty to look at and the fifth gets to sew through canvas camper tops.
Oops - make that 6 - someone was throwing out an old green Kenmore last weekend. They had the poor girl and her cabinet out for the garbage men and I just couldn't let her end up at the dump!