Market Days is Mt. Vernon's very own outdoor flea market and vendor fair. Now located at Veteran's Park, 800 S. 27th St., Market Days occurs on the first Saturday of every month between May and September. At Market Days, a variety of vendors sell diverse items such as antiques, collectibles, handmade items, plants, jewelry, blacksmith, flea market finds, produce, baked goods, kettle corn and much more. Admission is free and kid's activities, such as inflatables are provided. Visit, shop, and enjoy the Market atmosphere at Mt. Vernon's Market Days.