Harry Potter and the Philosopher's Stone was published by Bloomsbury Children's Books in June 1997 and as Harry Potter and the Sorcerer’s Stone in the USA by Arthur A. Levine Books/Scholastic in September 1998.
Harry Potter and the Chamber of Secrets, was published in July 1998 (June 2, 1999 in the USA) and was No. 1 in the adult hardback bestseller charts for a month after publication.
Harry Potter and the Prisoner of Azkaban was published on 8th July 1999 (September 8, 1999 in America) to worldwide acclaim and massive press attention. The book spent four weeks at No.1 in the adult hardback bestseller charts, while Harry Potter and the Philosopher's Stone simultaneously topped the paperback charts. In the USA the first three Harry Potter books occupied the top three spots on numerous adult bestseller lists.
Harry Potter and the Goblet of Fire, the fourth book in the series, was published in Britain, the USA, Canada and Australia on 8th July 2000 with a record first print run of 1 million copies for the UK and 3.8 million for the US. It quickly broke all records for the greatest number of books sold on the first weekend of publication.
Harry Potter and the Order of the Phoenix, the fifth book in the series, was published in the UK, the USA, Canada and Australia on 21st June 2003. Published in paperback on 10th July 2004, it is the longest in the series – 766 pages - and broke the records set by Harry Potter & the Goblet of Fire as the fastest selling book in history.
Harry Potter and the Half-Blood Prince, the sixth book in the series, was published in the UK, USA and other English-speaking countries on 16th July 2005 and also achieved record sales.
Harry Potter and the Deathly Hallows, the seventh and final book in the series, was published in the UK, US and other English speaking countries on 21st July 2007. The book is the fastest selling book in the UK and USA, with 8.3 million selling in the first 24 hours and 11.5 million in the first ten days.
J.K. Rowling has also written two small volumes, which appear as the titles of Harry’s school books within the novels:
Fantastic Beasts and Where to Find Them and Quidditch Through The Ages were published by Bloomsbury Children’s Books and Scholastic in March 2001 in aid of Comic Relief. The Tales of Beedle the Bard, another charitable book, was published by and for the Children’s High Level Group (LUMOS) in 2008.
The Harry Potter books are translated into 77 languages.