(Wines&Vines) - In spite of a weak economy, the number of wineries in North America continued to grow in 2011. The latest tally by WinesVinesDATA, the research arm of Wines & Vines magazine, identified 7,345 wineries now operating in the United States, up by 450 wineries or 6% from a year ago. Canadian wineries now number 465, up 17%. Wines & Vines publisher Chet Klingensmith released the count today at the Unified Wine & Grape Symposium, the industry’s largest trade show and conference, the same day the magazine’s annual Directory/Buyer’s Guide went on sale.