The most popular candy in the United States is M&M’s. These colorful, bite-sized chocolates have become a staple in American candy culture since their introduction in the 1940s. M&M's are known for their unique combination of milk chocolate covered in a hard candy shell, which makes them not only appealing to children but also to adults. Their popularity has led to a wide variety of flavors and limited-edition releases, ensuring that M&M's remain a beloved treat for consumers. They are often associated with celebrations, shared at events, and used in baking or decorating, further contributing to their status as a favorite candy in the U.S.