So what do you think is the number one costume the trick-or-treaters will be wearing when they come knocking at your door on Halloween. We found out.

Google trends has a cool feature that allows web surfers to find out the hottest costume trends based on region or city.

Rockford's favorites include superheros, comic book characters, historical figures, video game stars, and more.

Yes, the kiddies still are in love with the movie "Frozen"

Here are Rockford's Top 5 Halloween costumes

1. Elsa  (nationally ranked at #22)

2. Superhero (nationally ranked at #3)

3. Pocahontas (nationally ranked at #55)

4. Thor (nationally ranked at #144)

5. Mario (nationally ranked at #27)