The first Percy Jackson book, titled the Lightning Thief was released on July 28th, 2005.
The second book of the series, titled the Sea of Monsters, was released in May 3rd, 2006.
The third book of the series, titled the Titan's Curse, was released on May 1st, 2007.
The fourth book of the series, titled the Battle of the Labyrinth, was released on May 6th, 2008.
The final book of the series, titled the Last Olympian was released on May 5th, 2009.
The first Percy Jackson book, titled The Lightning Thief was released in June 28, 2005.
Check the inside cover. You know, there's such thing as a copyright date, and it should be close to that.
Hyperion books
Percy jacksons book has already come out.
After the first.
The last Olympian is the last book. A new series is beginning after that, the first of which called the lost Hero
The Percy Jackson and the Olympians series is concluded. However, the author of the Percy Jackson and the Olympians has confirmed that he is writing another series that will mention Percy Jackson. This new series is called 'Heroes of Olympus' and the first book 'The Lost Hero' will be released in October of 2010.
29th June
Percy jacksons book has already come out.
The third book
From the Percy Jackson book!! haha
The 5th and last book of Percy Jackson will come out on May 5, 2009!
The fifth and final book in the Percy Jackson and the Olympians book series comes out in the U.S. and U.K. on May 5, 2009. :D
After the first.
There will be a Percy Jackson 2. It will come out in 2012 :( Hopefully it is better than the first one.
There is not a sixth book in the Percy Jackson series, as it is concluded. However, Rick Riordan is writing a sequel series called the Heroes of Olympus which includes the original Percy Jackson characters, only that they are not the major characters. This series's first book, titled the Lost Hero, will be released on October 12th, 2010.
The last Olympian is the last book. A new series is beginning after that, the first of which called the lost Hero
There is no 6th book. Sorry. I want a 6th book to come out though.
The Percy Jackson and the Olympians series is concluded. However, the author of the Percy Jackson and the Olympians has confirmed that he is writing another series that will mention Percy Jackson. This new series is called 'Heroes of Olympus' and the first book 'The Lost Hero' will be released in October of 2010.
It already has!