My neighbors raised 3 piglets in an 8x8 area that had a 4x3 shelter in it. They only kept them until fall and then sent them off to the butcher. Not sure what kind of pigs. One was red and white, the other two black and white. I'm sure size/ breed matters so maybe you should google "breed" & housing requirements or something similar for a quick answer if nobody with experience gets back to you.