Where are these stores found?
See 21.
Publix stores map - they are in most states.
https://www.bing.com/images/search?view=detailV2&ccid=7q07P16z&id=D184319B6775B51E809506D827156B87C8A67B74&q=Publix+National+Store+Map&simid=608033049694046812&selectedIndex=3&ajaxhist=0