Halloween Express is a retailer that opened in 1990 and that operates 300 pop-up retail stores, locations that open their doors during the weeks leading up to Halloween and then close once the holiday ends. Headquartered in Owenton, Kentucky, the company also offers an online store, where customers can purchase costumes all year round. The company is known for having one of the largest selections of costumes online with more than 5,000 options available for men, women, kids and even pets. Plus, the store sells decorations and accessories for decorating a home or business in preparation for Halloween. Christmas merchandise is also available on the website year-round.