there aren't many around up north anymore. I go to Fabricland on 22, Fabric Warehouse (Around the corner from me in Rahway - but it's not really a quilt store - it's more for upholstery/drapes, but they carry yardage of Timeless Treasures stuff), JoAnn's.
There is a nice quilt store in Monmouth County, but their hours don't work with my work schedule so I can only get there once a year or so, and there's supposedly a couple of good ones down in South Jersey, but I haven't been to them.
There were some great ones in Berkley Heights and Scotch Plains, but they've been closed for a good while now.