Truth be told, I can throw a few of Stephen King's novels in here. But the one that I felt was the creepiest and gave me the most chills is Salem's Lot.
The story of a town slowly getting taken over by vampires remains one of my all time favorites. It's perfectly crafted.
This was a book I listened to while driving one of many trips across country for work. It remains the most spine tingling book to ever blaze from my speakers. I flat out got the willeys during some parts, especially at night. I enjoyed it so much that I read the book a couple of years later. Thankfully it remained just as powerful.
If you are a Stephen King fan and have not read this classic tale of fright. Stop what you are doing and pick up this book immediately!
There has also been two miniseries made from the book. I prefer the first one, directed by Tobe Hooper.