Wolff's Flea Market has operated Sundays April/May through October in Rosemont at the Allstate Arena since 1991. Family owned and operated, it is the premier family-friendly destination for Chicagoland bargain shoppers and small business entrepreneurs. It boasts 700+ vendors and 12,000+ customers. Wolff’s has previously operated several indoor markets in Mt. Prospect, Rolling Meadows, Melrose Park and Palatine. 

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