- Author J. K. Rowling wrote the final chapter of the last Harry Potter book in 1990, 7 years before the release of the first book.
- Harry Potter books have been translated into more than 70 languages.
- Publisher Bloomsbury offered just £2,500 in advance for Harry Potter and the Philosopher's Stone, the first book of the series.
- Harry Potter and author JK Rowling share the same birthday
- The Harry Potter series were the most banned books of the century in the U.S.
- The whole Harry Potter series contains 199 chapters, 4,224 pages and 1,090,739 words and has been made into 19 hours and 39 minutes of film.
- Novelist Stephen King said that Professor Umbridge from the Harry Potter series is the "greatest make-believe villain to come along since Hannibal Lecter."
- Harry Potter was born in 1980, so he's over 35 by now.
- President Obama has read every Harry Potter book.
- Over 500 girls have been named Hermione since the first 'Harry Potter' movie came out.
- The first Harry Potter volume was translated into Ancient Greek, making it the longest published work in Ancient Greek since the 3rd century AD.
- There are 106 people named Harry Potter in the U.S., according to the Census Bureau.
- World speed reading champion Anne Jones read all 607 pages of the last Harry Potter book in just 47 minutes.
- Daniel Radcliffe, who played Harry Potter, was allergic to Harry Potter glasses.
- For the release of "Harry Potter and the Goblet of Fire," over 9,000 FedEx trucks were used with no other purpose than to deliver the book.
- Actor Daniel Radcliffe once wore the same outfit for 6 months to make paparazzi angry.
- It took J.K. Rowling 6 years to write the "Harry Potter and the Philosopher's Stone"
- There's an actual course on Harry Potter being taught at Ohio State University.