How long is the longest Harry Potter book?

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.