Does anyone know where I can sale my things in Portland, OR near beaverton and hillsboro?

I live in an apartment and there is not much room to sell things and I do not think management will allow it. I have too many items to sell on craiglist and I would like to sell my things quickly before I move in the next couple of months. I would prefer a flea market and I have seen a few but I have not been able to get in contact with anyone to find out of if I can purchase space or a booth. Can anyone please help. Thanks.