The thing about superstitious beliefs is that it's hard, REALLY HARD, to get a set database to work from to try to sketch it out visually. That being said the closest thing I was able to find as far as any sort of database of spooky events with significant numbers I could use to visualize creepy activity is the Ghosts of America site.
I wanted to scrape their entire archive for every single city but I realized that I'm almost SURE their site is hand-written so I wasn't able to get data extractors to crawl it successfully. Instead I figured out the best laid our part of their site for scraping purposes would also be the part I would want to use. So I went ahead and scraped the "photos" section of the Ghosts of America.
The state results are as follows:
For a city-level look here:
As you may have been able to tell at this point there are lot of "questionable" ghosts photos out there... ;-) As usual if you have any questions or concerns hit me up on twitter @wjking0 and I'd be happy to talk them out! In the meantime just remember most ghosts are quite what they seem....