The series consists of seven books:
1. Harry Potter and the Philosopher's Stone (1997)
2. Harry Potter and the Chamber of Secrets (1998)
3. Harry Potter and the Prisoner of Azkaban (1999)
4. Harry Potter and the Goblet of Fire (2000)
5. Harry Potter and the Order of the Phoenix (2003)
6. Harry Potter and the Half-Blood Prince (2005)
7. Harry Potter and the Deathly Hallows (2007)
While J.K. Rowling has written some additional material set in the Harry Potter universe, such as the "Fantastic Beasts" series and "Harry Potter and the Cursed Child" play, these are not considered part of the original seven-book series.