When the company's retail operations began 11 years ago, Apple initially targeted 6,000-square-foot stores as the ideal size, according to analyst Charlie Wolf with Needham & Company. As of Apple's fiscal 2011 10-K report, Apple's retail stores are now slightly larger, at 8,400 square feet per store. But even as they have grown, Apple's retail stores are still bulging at the seams, according to Wolf.