There are 7 books.
The last Harry Potter movie will come out in 2011
The last book in the series is Harry Potter and the Deathly Hallows. The newest book written about Harry Potter by J.K. Rowling is The Tales of Beatle the Bard which will be in stores in December. The last thing written by J.K. Rowling around Harry Potter is the prequel written on a note card which is available for purchase on Waterstone's website.
The longest Harry Potter book in the series is Harry Potter and the Oder of the Phoenix. Harry Potter and the Sorcerer's Stone is 309 pages. Harry Potter and the Chamber of Secrets is 341 pages. Harry Potter and the Prisoner of Azkaban is 435 pages. Harry Potter and the Goblet of Fire is 734 pages. Harry Potter and the Order of Phoenix is 870 pages. Harry Potter and the Half-Blood Prince is 607 pages. Harry Potter and the Deathly Hallows is 759 pages. I am not positive on these pages just maybe the first 5 are right. I think.
There are many non-fiction books analyzing the Harry Potter books, but I do not think there are any released fictional books based off the series. There are, though, fan-fictions that can be as long as a regular novel based off of the Harry Potter series.
The longest Harry Potter book is Harry Potter and the order of the phoenix. It is 766 pages long.
The series has 7 books and is complete.
The entire length of the Harry Potter Film Series amounts to 1049 minutes which equates to roughly 17.5 hours.
The third novel in the Harry Potter series written by J.K. Rowling is titled Harry Potter and the Prisoner of Azkaban. In the United States version, it contains 22 chapters and is 435 pages long. The UK version is 317 pages.
There will be a total of eight Harry Potter films: Harry Potter and the Philosopher/Socerer's Stone Harry Potter and the Chamber of Secrets Harry Potter and the Prisoner of Azkaban Harry Potter and the Goblet of Fire Harry Potter and the order of the Phoenix Harry Potter and the Half Blood Prince Harry Potter and the Deathly Hallows Part 1 Harry Potter and the Deathly Hallows Part 2
J.K. Rowling confirmed that she would not be writing another Harry Potter book, but there are rumors that she is currently working on a Harry Potter encyclopedia. However she has stated that an encyclopedia will take a very long time to produce and her next book, The Casual Vacancy, is not related to Harry Potter.
It is not known how long the Lego Harry Potter games are.
Harry Potter and the Deathly Hollows (it will be split into two movie because it is the last book and it is so long) it is the 7 book.