As a confectionery expert with extensive knowledge of the sweets industry, I can tell you that the top-selling candy for Halloween can vary from year to year and region to region. However, some candies have consistently been popular choices among trick-or-treaters.

In the United States, Skittles, M&M's, and Reese's Peanut Butter Cups are often mentioned as favorites. Skittles are known for their fruity flavors and small size, which makes them easy to hand out and enjoy. M&M's are beloved for their colorful appearance and the fact that they come in a variety of colors and flavors. Reese's Peanut Butter Cups, with their combination of chocolate and peanut butter, are a classic treat that many people look forward to receiving during the Halloween season.

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This is America's favorite Halloween candy:Reese's. > Sales: $509.85 million. > Unit sales: 407.44 million. ... M&M's. > Sales: $500.82 million. > Unit sales: 435.18 million. ... Snickers. > Sales: $456.91 million. > Unit sales: 412.81 million. ... Hershey's. > Sales: $324.63 million. ... Kit Kat. > Sales: $306.51 million.read more >>