According to The Takeout, these are the most popular Halloween candies by state. I should live in Florida - Reece's Cups are mine.
- Alabama: Skittles
- Alaskas: Twix
- Arizona: Hershey Kisses
- Arkansas Butterfinger
- California: M&M’s
- Colorado: Milky Way
- Connecticut: Almond Joy
- Delaware: Sour Patch Kids
- Florida: Reese’s Cups
- Georgia: Jolly Ranchers
- Hawaii: Hershey’s Mini Bars
- Idaho: Snickers
- Illinois: Sour Patch Kids
- Indiana: Starburst
- Iowa: Reese’s Cups
- Kansas: M&M’s
- Kentucky: Reese’s Cups
- Louisiana: Lemonheads
- Maine: Sour Patch Kids
- Maryland: Hershey Kisses
- Massachusetts: Butterfinger
- Michigan: Starburst
- Minnesota: Hot Tamales
- Mississippi: 3 Musketeers
- Missouri: Almond Joy
- Montana: Twix
- Nebraska: Sour Patch Kids
- Nevada: Hershey’s Mini Bars
- New Hampshire: Reese’s Cups
- New Jersey: Tootsie Pops
- New Mexico: Hot Tamales
- New York: Sour Patch Kids
- North Carolina: M&M’s
- North Dakota: Hot Tamales
- Ohio: Blow Pops
- Oklahoma: Skittles
- Oregon: M&M’s
- Pennsylvania: Hershey’s Mini Bars
- Rhode Island: M&M’s
- South Carolina: Skittles
- South Dakota: Starburst
- Tennessee: Tootsie Pops
- Texas: Sour Patch Kids
- Utah: Candy Corn
- Vermont: M&M’s
- Virginia: Butterfinger
- Washington DC: M&M’s
- Washington: Tootsie Pops
- West Virginia: Hershey’s Mini Bars
- Wisconsin: Butterfinger
- Wyoming: Reese’s Cups
As far as Halloween movies...here's that list.