There are only 3 so far.
5, #1 Witch, #2 Curse, #3 Legacy, #4 Spellbound, #5 Resurrection
There are 5 books in the Wicked series. They are (in order):WitchCurseLegacySpellboundResurrection
Wicked: The Life and Times of the Wicked Witch of the West Son of the Witch A Cowardly War Out of Oz
No, wicked is the fifth book in the series. The last book is Burned, which comes out on Dec. 4 2012
There are 4 books in the series.
If it's the literary series you're referring to (as one would assume based on the fact that it wouldn't make sense to refer to books pertaining to the musical as a series as the only contextual commonality would be the subject matter, whereas the literary series shares both subject matter and authorship) then there are three books in the series: WICKED, SON OF A WITCH and A LION AMONG MEN and the newest on OUT OF OZ all written by Gregory McGuire.
A series consisting of 4 books is typically referred to as a "tetralogy."
The 'Wicked' books sell for around 12 dollars [$12.00] at Target.
Four hundred six [406] pages is the length of the novel 'Wicked' by Gregory Maguire [b. June 9, 1954]. The publication date is 1995. The publisher is Harper Collins. It's the beginning novel in Maguire's 'Wicked Years' series.
The first book in the Wicked series by Gregory Maguire is "Wicked: The Life and Times of the Wicked Witch of the West." It reimagines the story of the Wicked Witch of the West from "The Wizard of Oz" and explores her journey and motivations.
tetralogy
Yes, Gregory Maguire [b. June 9, 1954] plans to write a fourth novel in his 'Wicked Years' series. That's one of his many projects for 2010. Whether or not the fourth novel will be the last is unknown at this point.