Halloween is such a fun time of year, and finding the perfect Halloween costume isn't just for kids anymore. Adult Halloween parties can be epic, and people seem to come up with more and more creative costumes each year. So, what's the most popular Halloween costume in the state? The Top Halloween Costume in The Top 'Classic' Halloween Costume in New JerseyBefore we get to costumes, let's go through a few fun and festive Halloween facts. Chicoo has a feature out naming the most popular classic Halloween costumes in each state.