This report reveals the most popular Halloween candy in every state, and I was quite surprised to see what our favorite Halloween candy is. Nerds Candy Tops the List in ColoradoColorado's favorite Halloween candy is also the favorite in five other states. Alaska, Arizona, Oregon, and Washington, along with Colorado, all seem to love Nerds candy for Halloween. See the full list of the most popular Halloween candy by state at apt2b.com. Colorado's Most Popular Halloween Costumes From 1996 to 2021 Who doesn't love to dress up for Halloween?