American Candy makers have produced delicious treats for more than 150 years. Which is the oldest candy company? Ghirardelli Chocolate in California? Mars in Virginia? Brown & Haley in Tacoma, Washington? Hershey in Pennsylvania? Fannie May in Chicago? Palmer’s in Iowa? Sweet Candy Co in Salt Lake City? Mars Wrigley in Chicago? Visit our Candy Tour Map at Confectionlink.org to find which companies have manufactured for the longest time, which companies have stores you can visit. Some offer tours, too. Click on the pins. Factory outlets are red. Company stores are yellow. Factory tours and Visitor Centers are green.