Trader Joe's is a privately held chain of specialty grocery stores headquartered in Monrovia, California.
As of July 2009, Trader Joe's has a total of 325 stores. Its stores are located most densely in Southern California, but the company has locations in 24 other states and Washington, D.C.
Trader Joe's was founded by Joe Coulombe and is currently owned by a family trust set up by German billionaire Theo Albrecht also owners of Aldi North.
From 2008 this supermarket is part of Greenpeace black list for Seafood.