According to a 2021 YouGov poll , 23% of Americans say that Halloween is absolutely their favorite holiday. People In Florida Have a Favorite Classic CostumeChicoo has a feature out naming the most popular classic Halloween costumes in each state. As for the most popular classic Halloween costume across the country, it's the mermaid, which is the top costume in seven states, Chicco states. Those In Florida Love to DecorateLombardo Homes has put together a feature on the most popular Halloween decorations in each state. Also, the most popular Halloween decoration in the entire country is a skeleton, followed by pumpkins and bats.